Claude Prompt Library

50 Claude Prompts That Build Chrome Extensions

50 copy-paste prompts

Describe the button your browser is missing and Claude builds it. Every prompt returns the complete extension, each file in full, plus plain install steps. No code, no dev, nothing leaves your browser.

In short: This page contains 50 copy-paste ready prompts, organized into 6 categories with a description and pro tip for each. The first 5 prompts are free instantly, no signup needed. Hand-curated and tested by the AI Academy team.

By Louis Corneloup · Founder, Techpresso

Last updated July 22, 2026·Hand-curated & tested by the AI Academy team

Tabs & Focus

9 prompts

Tab Cleaner that closes what you stopped using

1/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Tab Cleaner What it does: Shows every open tab, flags the ones I have not touched in a set number of days, and closes them in one click after saving their URLs. </extension> <requirements> - Popup lists open tabs grouped by how long since I last activated them - A threshold I can set, defaulting to 3 days - A "Save and close" button that copies the URLs into a saved list before closing - A saved list I can reopen later, individually or all at once - Never close a pinned tab, and never close the tab I am currently on </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

The flagship no-code extension build. Solves the 47-open-tabs problem without losing anything.

💡

Pro tip: Ask for the saved list to export as plain text. It turns the extension into a lightweight read-later system.

Tab limiter that stops you opening the 30th tab

2/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Tab Limit What it does: Enforces a maximum number of open tabs and makes me choose what to close when I hit the limit. </extension> <requirements> - A limit I can set, defaulting to 15 - When I exceed it, show a small overlay listing my oldest tabs and ask which to close - A "just this once" override that raises the limit for 30 minutes - A counter badge on the toolbar icon showing current tab count against the limit </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A hard constraint on tab sprawl, with a deliberate escape hatch so it does not become annoying.

💡

Pro tip: The 30-minute override is what makes this survivable. Without it most people uninstall by day two.

Focus mode that blocks your own worst sites

3/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Focus Mode What it does: Blocks a list of sites I choose during a timed focus session, with a blocking page that tells me how long is left. </extension> <requirements> - A site list I manage in the options page - Start a session for 25, 50 or a custom number of minutes - Blocked pages show a clean screen with the time remaining and nothing else clickable - A visible countdown in the toolbar badge - Sessions survive closing and reopening the browser </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A site blocker you control, with no subscription and no account.

💡

Pro tip: Ask for the block page to show what you said you were working on. Naming the task cuts the urge to override.

Tab search that actually finds the tab

4/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Tab Finder What it does: A keyboard-driven search across all open tabs by title and URL, so I can jump to one without hunting. </extension> <requirements> - Opens with a keyboard shortcut - Fuzzy search across tab titles and URLs as I type - Arrow keys to move, Enter to jump to that tab - Shows which window each tab is in - Also searches recently closed tabs and offers to reopen them </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Replaces manual tab hunting with a command-palette-style jump.

💡

Pro tip: Set the shortcut to something your muscle memory will actually reach for. Most people default to a chord they never press.

Session saver for your working set

5/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Session Saver What it does: Saves a named group of tabs and restores the whole set later. </extension> <requirements> - Save all tabs in the current window as a named session - A list of saved sessions with tab counts and the date saved - Restore a session into a new window, or add it to the current one - Delete and rename sessions - Export all sessions as a JSON file so I own my data </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Turns a research session into something you can put down and pick up next week.

💡

Pro tip: Save a session before closing anything. It removes the fear that makes people hoard tabs.

Duplicate tab killer

6/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Dedupe Tabs What it does: Finds tabs open to the same page and closes the extras. </extension> <requirements> - Detects duplicates by URL, with an option to ignore query strings and fragments - Shows what it found before closing anything - Keeps the oldest tab of each duplicate set by default, with a toggle to keep the newest - One-click "close all duplicates" - Never touches pinned tabs </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A small, satisfying cleanup for anyone who opens the same doc six times a day.

💡

Pro tip: The ignore-query-strings option matters more than it sounds. Most real duplicates differ by tracking parameters.

Reading timer that shows how long a page will take

7/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Read Time What it does: Shows an estimated reading time for the current page before I commit to it. </extension> <requirements> - Calculates from the main article text, not the whole page including navigation and comments - Shows the estimate in the toolbar badge - A reading speed I can adjust in options - Also shows word count on click </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A five-second decision aid on whether to read now or save for later.

💡

Pro tip: Ask it to exclude comment sections explicitly, or long comment threads will wreck the estimate.

Auto-grouper that sorts tabs by site

8/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Auto Group What it does: Automatically groups my tabs into Chrome tab groups by domain or by rules I set. </extension> <requirements> - Group by domain automatically, with sensible colour assignment - Custom rules, for example all Google Docs tabs into a group called Docs - A manual "group everything now" button - An option to auto-group as new tabs open, or only on demand - Never break existing manual groups </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Imposes structure on a chaotic tab bar without manual dragging.

💡

Pro tip: Start with on-demand grouping. Automatic grouping while you work moves tabs under your cursor and feels hostile.

Snooze a tab until later

9/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Tab Snooze What it does: Closes a tab now and reopens it at a time I choose. </extension> <requirements> - Snooze options: in an hour, this evening, tomorrow morning, next week, or a custom time - Snoozed tabs appear in a list with their wake times - Reopens automatically in the background at the chosen time with a notification - Cancel or reschedule a snooze - Survives browser restarts </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Gets a tab off your screen without losing it, which is the actual reason people never close tabs.

💡

Pro tip: Snoozing to "tomorrow morning" is the highest-value option. Ask for it as the default.

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Reading & Research

9 prompts

Page summariser that works on any article

10/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Quick Summary What it does: Extracts the main article text from the current page and shows it in a clean reading panel with the key points pulled out. </extension> <requirements> - Strips navigation, ads, sidebars, related-posts blocks, and comment sections - Shows the cleaned article in a readable side panel with adjustable text size - Pulls out the key points as a short bulleted list at the top - A copy button for both the full text and the key points - Works on standard article pages and degrades gracefully when it cannot find an article </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A reader view plus key points, without sending the page anywhere.

💡

Pro tip: Ask for the extraction logic to be commented. Sites change layouts and you will want to tweak it.

Highlighter that remembers across visits

11/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Highlighter What it does: Lets me highlight text on any page and shows those highlights again when I return. </extension> <requirements> - Select text and highlight it in a colour I choose from four options - Highlights persist per URL and reappear on revisit - A panel listing all my highlights for the current page - Export all highlights for a page as markdown - Delete individual highlights by clicking them </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Persistent web highlighting stored locally, no account required.

💡

Pro tip: The markdown export is what makes this useful. Highlights you cannot get out are highlights you never revisit.

Citation grabber for the page you are on

12/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Cite This What it does: Generates a clean citation for the current page in the format I need. </extension> <requirements> - Pulls title, author, publication and date from page metadata where available - Formats in APA, MLA, Chicago and plain markdown link - Shows what it could not find rather than inventing it - One-click copy for each format - A note field I can add before copying </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Removes the tedium of citing sources, without fabricating missing metadata.

💡

Pro tip: Insist that missing fields are shown as missing. A citation tool that guesses at authors is worse than none.

Research clipper that builds one running document

13/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Clipper What it does: Saves selected text plus its source URL into a single growing notes document. </extension> <requirements> - Select text, right-click, and send it to my notes with the source URL and date - A panel showing everything clipped, grouped by source - Export the whole thing as markdown with proper source attribution - Search across my clips - Clear all, with a confirmation step </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Turns scattered reading into one attributed document you can actually write from.

💡

Pro tip: Attribution on every clip is the point. Unattributed clips become unusable within a week.

Dictionary and context lookup on selection

14/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Lookup What it does: Shows a definition and plain-language explanation for any word or phrase I select. </extension> <requirements> - Select text and a small popup appears near the selection - Shows definition, and for acronyms, what it likely stands for given the page context - A toggle for whether it triggers on selection or only on a keyboard shortcut - Never covers the text I am reading, position it intelligently - Dismiss with Escape or by clicking away </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Fast in-place lookup while reading unfamiliar material.

💡

Pro tip: Make it shortcut-triggered, not selection-triggered. Popups on every selection get infuriating fast.

Paywall-aware read-later that saves the text

15/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Save Text What it does: Saves the readable text of a page locally so I still have it if the page changes or disappears. </extension> <requirements> - One click saves the extracted article text plus title, URL and date - A library of saved pages with search - Read a saved page in a clean offline view - Export the library as a folder of markdown files - Show storage used, and let me delete individual items </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A personal archive of what you actually read, stored on your machine.

💡

Pro tip: Ask for a storage indicator. Local storage has limits and silent failures are confusing.

Compare two pages side by side

16/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Side by Side What it does: Opens two pages in a split view so I can compare them directly. </extension> <requirements> - Pick two open tabs and display them in a split window - Adjustable divider - Synchronised scrolling toggle - Swap sides with one click - Works with any two normal web pages </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Useful for comparing documentation, pricing pages, or two drafts of anything.

💡

Pro tip: Synchronised scrolling only helps on similarly structured pages. Keep it as a toggle, not a default.

Outline generator for long pages

17/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Page Outline What it does: Builds a clickable outline of the current page from its headings. </extension> <requirements> - Extracts the heading hierarchy into a navigable side panel - Click a heading to jump to it - Highlights which section I am currently in as I scroll - Collapsible nesting - A copy button that copies the outline as markdown </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Makes long documentation and reports navigable without endless scrolling.

💡

Pro tip: The "copy outline as markdown" is a quiet win for anyone summarising documents.

Change watcher for a page you care about

18/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Watch This Page What it does: Checks a page periodically and tells me when the part I care about changes. </extension> <requirements> - Select a region of the page to watch - Set how often to check - Notify me when that region changes, showing what was there before and what it is now - A list of watched pages with their last-checked time - Pause or remove any watch </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Replaces manually refreshing a page to see whether something updated.

💡

Pro tip: Watch a specific region, not the whole page. Whole-page watching fires on every ad rotation.

Shopping & Money

8 prompts

Price history tracker on product pages

19/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Price Watch What it does: Records the price of a product page each time I visit and shows me whether the current price is actually a good one. </extension> <requirements> - Detects the price on common shopping pages - Stores price history locally per product URL - Shows a small history panel with the lowest, highest and current price - Tells me plainly whether today's price is high, typical or low against what I have seen - Manual price entry as a fallback when detection fails </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A personal price history so "sale" claims can be checked against reality.

💡

Pro tip: Manual entry as a fallback matters. Price detection breaks constantly as sites change markup.

Unit price calculator for supermarket pages

20/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Unit Price What it does: Shows the price per unit on shopping pages so I can compare sizes honestly. </extension> <requirements> - Detect price and quantity, then display price per kilogram, litre or unit - Show it directly next to the listed price - Handle multipacks correctly - A manual override when detection is wrong - Works on listing pages, not just individual product pages </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Makes package-size comparisons honest without mental arithmetic.

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Pro tip: Multipack handling is where these always break. Call it out explicitly in the prompt.

Subscription spotter in your inbox tabs

21/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Subscription Spotter What it does: Flags recurring-payment language on checkout and pricing pages before I sign up. </extension> <requirements> - Detects trial lengths, auto-renewal terms, and cancellation conditions in page text - Shows a clear summary badge: what I will be charged, when, and how often - Highlights the actual cancellation terms if the page contains them - Warns when a free trial converts to paid automatically - Never blocks the page, only informs </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Surfaces the renewal terms that pricing pages work hard to bury.

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Pro tip: Ask it to quote the exact sentence it found. A summary you cannot verify is not much use at checkout.

Currency converter that works inline

22/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Inline Currency What it does: Converts prices on the page into my home currency. </extension> <requirements> - Select a price and see the converted amount, or convert all detected prices on the page - A home currency I set once in options - Let me enter and store my own exchange rate rather than calling an external service - Show the rate used and when I last updated it - Round sensibly and never imply more precision than the rate justifies </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Removes mental currency conversion while shopping or reading foreign pricing.

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Pro tip: A stored manual rate keeps it fully local. Ask for a visible "rate last updated" so you notice when it is stale.

Cart total sanity check

23/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Cart Check What it does: Shows what my cart will actually cost including the extras that appear at the last step. </extension> <requirements> - Detect the subtotal on cart pages - Let me enter typical shipping, tax and fee percentages once - Show the realistic total up front - Flag when the final checkout total differs from my estimate, and by how much - Keep a simple log of recent estimated versus actual totals </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Removes the last-step surprise from online checkout.

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Pro tip: The estimate-versus-actual log quietly teaches you which retailers add the most at the end.

Wishlist that lives in your browser

24/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Wishlist What it does: Saves products I am considering with their price at the time I saved them. </extension> <requirements> - Save the current product page with title, price, image and URL - A grid view of everything saved with the saved price and today's price where detectable - Mark items as bought or remove them - Sort by date added or price change - Export as a plain list </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A cross-site wishlist that also tells you what has moved in price since you saved it.

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Pro tip: The price-since-saved column is the feature. It converts browsing into a waiting game you can win.

Discount code field checker

25/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Code Check What it does: Keeps my own list of discount codes and reminds me to try them at checkout. </extension> <requirements> - A personal list of codes I add manually with the retailer and any expiry - On a checkout page for a matching retailer, show my saved codes - Mark codes as worked or failed so I stop retrying dead ones - No scraping and no external code sources, this is only my own list - Sort by most recently worked </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A private, honest version of a coupon extension with no affiliate hijacking.

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Pro tip: Keeping it to your own codes is the point. Coupon extensions that fetch codes usually rewrite affiliate links.

Spending pause button

26/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Cooling Off What it does: Adds a deliberate delay between deciding to buy and buying. </extension> <requirements> - On checkout pages at retailers I list, show an overlay asking me to wait - A configurable delay, defaulting to 24 hours, per item - A list of items currently cooling off with the time remaining - An override that requires typing a reason, which is then saved to a log - Show my override log so I can see my own patterns </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A friction layer against impulse buying, with an honest record of when you overrode it.

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Pro tip: The typed-reason override is what makes it work. The log becomes uncomfortable reading, which is the point.

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Work & Automation

8 prompts

One-click meeting notes template

27/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Meeting Notes What it does: Drops a structured meeting-notes template into any text field with one click. </extension> <requirements> - A template I define in options with placeholders for date, attendees, decisions, and actions - Insert it into whatever text field is focused - Auto-fill today's date - Multiple named templates I can pick between - A keyboard shortcut for the template I use most </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Removes the ten seconds of formatting friction that stops people taking structured notes.

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Pro tip: Keep the template short. Long templates get abandoned mid-meeting.

Text expander for the phrases you retype

28/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Expander What it does: Expands short abbreviations into full text as I type, anywhere in the browser. </extension> <requirements> - Define abbreviation and expansion pairs in options - Trigger on typing the abbreviation followed by a set character - Work in normal inputs, textareas, and standard rich-text editors - Support a cursor-position marker so I can define where the caret lands - Import and export my snippet list </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

The classic productivity win: stop retyping the same fifteen phrases.

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Pro tip: The cursor-position marker is what separates a useful expander from an annoying one. Do not skip it.

Form filler for the fields you always fill

29/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Form Fill What it does: Fills repetitive form fields with my saved details on command. </extension> <requirements> - A saved profile of my common details, stored locally only - A keyboard shortcut that fills matching fields on the current form - Show me what it filled and let me undo - Never auto-fill without an explicit command - Never store passwords or payment details, and say so clearly in the options page </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Speeds up repetitive forms while deliberately refusing to touch credentials.

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Pro tip: The explicit refusal to store passwords is a feature. Build it that way and you never have to worry about the storage.

Screenshot with annotation, saved locally

30/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Snap What it does: Captures a region of the page and lets me annotate it before saving. </extension> <requirements> - Select a region to capture - Draw boxes, arrows and add text on the capture - A blur tool for hiding sensitive information - Save as PNG or copy to clipboard - Everything happens locally with no upload </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Screenshot-and-annotate without a cloud service in the loop.

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Pro tip: The blur tool is the one people miss until they have shared a screenshot with a customer name in it.

Quick link shortener using your own rules

31/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Tidy Link What it does: Strips tracking parameters from URLs before I share them. </extension> <requirements> - Remove common tracking parameters from the current URL - Show the before and after so I can see what was removed - A custom list of parameters to strip that I can edit - One-click copy of the cleaned URL - Also clean any URL I paste into its input box </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Stops you sharing links with fifteen tracking parameters attached.

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Pro tip: Ask for the before-and-after view. Some parameters are load-bearing and you need to spot when one gets stripped.

Timer that logs where your hours went

32/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Time Log What it does: Tracks time against a task I name, and logs it. </extension> <requirements> - Start a timer with a task name and optional project - A visible running timer in the toolbar badge - Stop and log, with the entry saved locally - A log view grouped by day and project with totals - Export the log as CSV </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Simple manual time tracking with no account and no employer looking at it.

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Pro tip: Manual start beats automatic tracking here. Automatic trackers record activity, not work.

Clipboard history you can search

33/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Clip History What it does: Keeps a searchable history of what I have copied in the browser. </extension> <requirements> - Store the last 50 copied text items locally - Search across them - Click any item to copy it again - Pin items so they never get pushed out - A clear-all button and an option to exclude specific sites entirely </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Recovers the thing you copied three copies ago.

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Pro tip: The site exclusion list matters. Exclude your password manager and banking sites explicitly.

Do-not-disturb for browser notifications

34/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Quiet Hours What it does: Suppresses web notifications during hours I set. </extension> <requirements> - Set quiet-hours windows per day of the week - Suppress notifications from sites during those windows - A queue showing what was suppressed, viewable afterwards - A per-site allowlist for genuinely urgent sources - Manual toggle for an immediate quiet period </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Gives you notification control without disabling notifications entirely.

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Pro tip: The suppressed-notification queue is what makes this safe to leave on. Nothing is lost, just delayed.

Privacy & Cleanup

8 prompts

Cookie banner auto-dismisser on your terms

35/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Banner Away What it does: Dismisses cookie consent banners by selecting the most private available option. </extension> <requirements> - Detect common consent banners - Choose reject-all or essential-only where that option exists - Where only accept exists, hide the banner without consenting and tell me it did so - A per-site disable list for sites where it interferes - A counter showing how many it has handled </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Removes consent-banner friction while defaulting to the private choice.

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Pro tip: The "hid it without consenting" distinction matters. You want to know when it could not actually reject.

Autoplay blocker with per-site memory

36/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: No Autoplay What it does: Stops video and audio from playing automatically. </extension> <requirements> - Block autoplaying media on page load - A per-site allowlist for sites where I want autoplay - A visible indicator when something was blocked, with a click-to-play button - Do not break media I actively started - A global on-off toggle </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Ends the surprise of a video starting in a background tab.

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Pro tip: The click-to-play indicator is essential. Silent blocking makes video sites look broken.

Site data cleaner you can point at one domain

37/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Clean Site What it does: Clears cookies and local storage for the current site only. </extension> <requirements> - One button clearing cookies, local storage and session storage for the current domain - Show what will be cleared before doing it - A protected list of sites it will never clear, for the ones I stay logged into - A log of recent cleans - An option to also reload the page afterwards </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Surgical site-data clearing instead of nuking your whole browser state.

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Pro tip: Set the protected list before first use. Otherwise you will log yourself out of something important.

Element hider for the parts of a site you hate

38/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Hide That What it does: Lets me permanently hide any element on a page. </extension> <requirements> - Click an element to select it, with a visual outline as I hover - Hide it, and remember it for future visits to that site - A list of hidden elements per site, with the ability to unhide - An option to hide by element type across a whole site - A global toggle to temporarily show everything again </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Removes the recommended-content bar, the sticky header, or whatever else you resent.

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Pro tip: The temporary show-everything toggle saves you when a hidden element turns out to be load-bearing.

Referrer and history minimiser

39/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Quiet Browsing What it does: Reduces what sites learn about where I came from. </extension> <requirements> - Strip referrer information on outbound links from sites I list - Show an indicator when it is active on a page - A per-site configuration - Explain in the options page exactly what this does and does not protect against - No claims of anonymity, be honest about the limits </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A modest, honest privacy improvement without overpromising.

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Pro tip: Insist on the honesty requirement. Privacy tools that overstate protection are actively harmful.

Download organiser by source site

40/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Sort Downloads What it does: Renames and organises downloads based on where they came from. </extension> <requirements> - Prefix downloaded filenames with the source domain and date - A rule list mapping sites to filename patterns - Preview the resulting filename before the download completes where possible - A log of recent downloads with their original and new names - A per-site disable option </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Makes the downloads folder navigable three months later.

💡

Pro tip: Date-prefixing alone solves most of the problem. Start there before building complex rules.

Permission auditor for sites you have granted access

41/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Permission Audit What it does: Shows me which sites have camera, microphone, location and notification permissions. </extension> <requirements> - List all sites with granted permissions, grouped by permission type - Show when each was granted where that information is available - Revoke any permission from the list - Flag permissions I have not used recently - A plain-language explanation of what each permission actually allows </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

Surfaces the permissions you granted once and forgot about.

💡

Pro tip: The "not used recently" flag is the useful column. Most stale permissions are ones you granted for a single task.

Login session lister

42/50

<context> I want a working Chrome extension and I do not write code. Build the complete thing, then walk me through installing it. </context> <extension> Name: Where Am I Logged In What it does: Shows which sites I currently have an active session with. </extension> <requirements> - List domains with session cookies present - Group by how recently I visited - One-click clear session for any listed site - A protected list that it will never touch - Explain clearly that this reflects local cookies, not server-side sessions </requirements> <deliverables> Give me every file in full, ready to paste, with the filename above each one: - manifest.json using Manifest V3 - every HTML, CSS and JavaScript file needed - a note on which permissions you requested and exactly why each one is needed Then give me numbered install steps for chrome://extensions with Developer Mode, written for someone who has never done this. </deliverables> <constraints> - Manifest V3 only. No deprecated V2 APIs. - Request the minimum permissions that make it work. If a feature would need a scary permission, tell me and offer a narrower alternative. - Everything runs locally. No external servers, no analytics, no data leaving my browser. - Clean, readable interface. Assume I will want to change the colours later, so keep styling in one obvious place. - Add short comments explaining anything I would plausibly want to edit. </constraints> <after> Once it works, suggest three small upgrades I could ask you for next, ordered by how much they would improve daily use. </after>

A quick answer to "what am I still logged into on this machine".

💡

Pro tip: The honesty note about server-side sessions matters. Clearing a cookie is not the same as logging out everywhere.

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Frequently Asked Questions

No. Each prompt asks Claude for every file in full, with the filename above each one, plus numbered install steps written for someone who has never loaded an extension before. You copy the files into a folder and load that folder in Chrome.

Save the files Claude gives you into one folder. Open chrome://extensions, turn on Developer Mode in the top right, click Load Unpacked, and select that folder. The extension appears immediately and you can reload it after any edit.

Every prompt instructs Claude to request the minimum permissions needed and to explain why each one is required. They also specify that everything runs locally with no external servers. Read the permissions section Claude returns, and if a permission looks broader than the feature needs, ask for a narrower alternative.

These are built for personal use loaded unpacked, which needs no review. Publishing to the store adds requirements around privacy policies, listing assets and review, so ask Claude for the store-submission checklist if that is your goal.

Paste the error from the extensions page back to Claude along with the file it came from. Chrome shows errors per extension, and that error text is usually enough for Claude to fix it in one pass.

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50 Claude Prompts That Build Chrome Extensions

Tabs & Focus

Tab Cleaner that closes what you stopped using

Tab limiter that stops you opening the 30th tab

Focus mode that blocks your own worst sites

Tab search that actually finds the tab

Session saver for your working set

Duplicate tab killer

Reading timer that shows how long a page will take

Auto-grouper that sorts tabs by site

Snooze a tab until later

Reading & Research

Page summariser that works on any article

Highlighter that remembers across visits

Citation grabber for the page you are on

Research clipper that builds one running document

Dictionary and context lookup on selection

Paywall-aware read-later that saves the text

Compare two pages side by side

Outline generator for long pages

Change watcher for a page you care about

Shopping & Money

Price history tracker on product pages

Unit price calculator for supermarket pages

Subscription spotter in your inbox tabs

Currency converter that works inline

Cart total sanity check

Wishlist that lives in your browser

Discount code field checker

Spending pause button

Work & Automation

One-click meeting notes template

Text expander for the phrases you retype

Form filler for the fields you always fill

Screenshot with annotation, saved locally

Quick link shortener using your own rules

Timer that logs where your hours went

Clipboard history you can search

Do-not-disturb for browser notifications

Privacy & Cleanup

Cookie banner auto-dismisser on your terms

Autoplay blocker with per-site memory

Site data cleaner you can point at one domain

Element hider for the parts of a site you hate

Referrer and history minimiser

Download organiser by source site

Permission auditor for sites you have granted access

Login session lister

Publishing & Social

Feed remover that leaves the useful parts

Post scheduler reminder queue

Engagement timer for social sites

Comment section collapser

Thread unroller for long posts

Draft rescuer for text you type into web forms

Alt text checker for pages you publish

Headline and meta preview for your own pages

Frequently Asked Questions

Prompts are the starting line. Tutorials are the finish.