25+ Chrome Extension Ideas You Can Build with AI

Productivity

• One-key tab grouper

  Build a Chrome extension that groups all open tabs by domain with a single keyboard shortcut. Add a popup to rename groups and a button to collapse all.

• Focus mode site blocker

  Build a Chrome extension that lets me add a blocklist of domains and blocks them with a friendly screen during work hours I configure in the options page.

• Reading time estimator

  Build a Chrome extension that injects an estimated reading time badge into the top of every article page based on word count.

• Pomodoro overlay

  Build a Chrome extension popup with a Pomodoro timer (25/5/15) that posts desktop notifications and saves session history in chrome.storage.

• Quick note clipper

  Build a Chrome extension that saves the selected text from any page into a notes list stored in chrome.storage, with a popup to view, search, and copy notes.

Developer utilities

• JSON viewer & formatter

  Build a Chrome extension that detects raw JSON responses and renders them with collapsible tree view, syntax highlighting, and copy-as-curl.

• Color picker eyedropper

  Build a Chrome extension that adds an eyedropper button to pick any color on the page and copy its hex, rgb, and hsl values.

• Font inspector

  Build a Chrome extension that on hover shows the font-family, size, weight, and line-height of any text element on the page.

• API request mocker

  Build a Chrome extension that lets developers define URL patterns and return mocked JSON responses for matching XHR/fetch requests.

• localStorage editor

  Build a Chrome extension popup that lists, edits, and exports localStorage and sessionStorage for the active tab.

Content enhancers

• Page summarizer

  Build a Chrome extension that sends the current article to an AI model (key stored in the secrets vault) and shows a 5-bullet summary in the popup.

• Inline dictionary

  Build a Chrome extension that shows a definition tooltip when I double-click any word on a page.

• YouTube transcript exporter

  Build a Chrome extension that grabs the transcript of the current YouTube video and downloads it as a clean .txt file.

• Translate selection

  Build a Chrome extension that adds a right-click 'Translate selection' menu and shows the result in a small floating panel.

• Dark mode for every site

  Build a Chrome extension that applies a high-contrast dark mode to any page, with a per-site toggle stored in chrome.storage.

Shopping & money

• Price history tracker

  Build a Chrome extension that, on product pages, shows a small badge linking to a price history chart for that item.

• Coupon auto-applier

  Build a Chrome extension that detects checkout pages and tries known coupon codes from a list I configure in the options page.

• Currency converter

  Build a Chrome extension that rewrites all visible prices on the page into my preferred currency using a daily rates API key stored in the secrets vault.

Social & creators

• Twitter/X bookmark exporter

  Build a Chrome extension that exports my X bookmarks to a JSON file from the bookmarks page.

• LinkedIn outreach helper

  Build a Chrome extension that adds a sidebar with templated DMs on LinkedIn profile pages and lets me track who I messaged.

• Reddit thread saver

  Build a Chrome extension that saves the current Reddit thread (title, body, top 20 comments) as markdown to my downloads.

Privacy & security

• Cookie banner auto-dismisser

  Build a Chrome extension that automatically clicks 'Reject all' on common cookie banners using a maintained selector list.

• Password strength meter

  Build a Chrome extension that, on any password field, shows an inline strength meter and entropy estimate.

• Tracker counter

  Build a Chrome extension that counts trackers on each page (using a small blocklist) and shows the number in the toolbar badge.

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