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Top 23 JavaScript manifest-v3 Projects
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YouTube_Summary_with_ChatGPT
YouTube Summary with ChatGPT is a simple Chrome Extension (manifest v3) that allows you to get both YouTube video transcripts and summary of the video with OpenAI's ChatGPT AI technology.
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SaaSHub
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keyFinder
Passive API key and secret discovery browser extension for Chrome and Firefox. 80+ detection patterns, zero config.
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search-bookmarks-history-and-tabs
Browser extension to search bookmarks, history and tabs. Supports tagging and fuzzy search.
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chrome-extension-webpack
Get started with Chrome extensions development using webpack, TypeScript, Sass, and more.
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bookmarks-organizer
With the Bookmarks Organizer it's easy to put order in your bookmarks. The Bookmarks Organizer finds no longer working bookmarks, redirects, duplicates and more!
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share-to-mastodon
Browser extension for sharing links and tabs to Mastodon (and other Fediverse platforms)
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Twitter-Links-beta
A Chrome extension to show the latest tweets that link to the current page. Updated for Manifest v3 (by swyxio)
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GitSyncMarks
Browser extension for bidirectional bookmark sync with GitHub. Per-file storage (one JSON file per bookmark), three-way merge, auto-sync, multiple profiles. Works on Chrome and Firefox. Add bookmarks via Git, CLI, or GitHub Actions. No server — syncs directly via the GitHub API.
Project mention: GitSyncMarks – Browser extension that syncs bookmarks to your own GitHub repo | news.ycombinator.com | 2026-02-18 -
m3u8
This lightweight yet powerful browser extension leverages the industry-standard hls.js library to enable smooth playback of HLS streams (.m3u8 playlists) natively (by Chromo-lib)
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GenresFox
A completely open-source, high-performance, and extremely minimalist browser new tab page extension.
Project mention: Show HN: GenresFox v0.4 – Hand-Written, Zero-Dependency Rust WASM | news.ycombinator.com | 2025-12-25This time, I'm not joking.
Visit the GenresFox Github repository to learn more: https://github.com/zayokami/GenresFox
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simple-image-converter
Chrome extension to convert any image (WebP, AVIF, JPG) to PNG format with a single click. Manifest V3, multi-language support.
Project mention: I hate WebP files. So I built a Chrome extension to kill them. | dev.to | 2025-12-16GitHub Repo: https://github.com/opzozi/simple-image-converter
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debug-buddy-claude
Debug Buddy is a Claude AI-powered Chrome extension that analyzes JavaScript console errors in real time and provides actionable fix suggestions using Claude. Built as a local-first, privacy-respecting developer tool with zero backend dependencies.
Project mention: Show HN: Debug Buddy – A Chrome extension for console errors using Claude | news.ycombinator.com | 2025-12-25 -
Lumina
A professional, lightweight Chrome extension for web highlighting with rich text support, auto-restore, and smart management (by gezilinll)
Project mention: Lumina: A professional, lightweight Chrome extension for web highlighting | news.ycombinator.com | 2026-01-03 -
ProtoConsent
Browser extension for purpose-based privacy control. Per-site profiles, 6 purpose toggles, CMP auto-response, GPC signaling, and JavaScript SDK.
Source: github.com/ProtoConsent/ProtoConsent
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safe-tab-url-lister
Free Chrome extension — list & copy all open tab URLs as plain text, Markdown, JSON, or CSV. Zero tracking. One click.
Project mention: How to Copy All Chrome Tab URLs as Markdown, JSON, or CSV — Free Extension | dev.to | 2026-06-07- [Chrome Extensions Docs](https://developer.chrome.com/docs/extensions/) - [Safe Tab URL Lister — GitHub](https://github.com/muminkoykiran/safe-tab-url-lister) - [Obsidian](https://obsidian.md/)
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french-accents
A chrome extension that lets you copy French ⌨️ characters/accents, without the need to switch to AZERTY.
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GlowReadTTS
Privacy-first text-to-speech Chrome extension. Reads any webpage aloud with on-device AI voices and live sentence highlighting. American and British English. No accounts, no API keys, no network calls. Manifest V3, open source.
Project mention: I built an offline Chrome extension that reads webpages aloud with AI voices and zero cloud calls | dev.to | 2026-05-10Source: github.com/lavellehatcherjr/GlowReadTTS
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript manifest-v3 discussion
JavaScript manifest-v3 related posts
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Hnpes – Hacker News Previous Entry Search for Firefox and Chrome
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Show HN: GenresFox v0.4 – Hand-Written, Zero-Dependency Rust WASM
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Show HN: I built a browser extension with zero dependencies
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GenresFox Version 0.4.1 Update
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GenresFox Version 0.4.1 Update
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Good morning everyone, now I have WASM.
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HNPES – A Chrome Extension to Instantly Find Previous Hacker News Submissions
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A note from our sponsor - SaaSHub
www.saashub.com | 11 Jun 2026
Index
What are some of the best open-source manifest-v3 projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | YouTube_Summary_with_ChatGPT | 855 |
| 2 | keyFinder | 673 |
| 3 | SingleFile-MV3 | 584 |
| 4 | search-bookmarks-history-and-tabs | 327 |
| 5 | chrome-extension-webpack | 304 |
| 6 | bookmarks-organizer | 212 |
| 7 | download_with_aria2 | 90 |
| 8 | smartReader | 81 |
| 9 | share-to-mastodon | 66 |
| 10 | Twitter-Links-beta | 38 |
| 11 | cra-crx-boilerplate | 35 |
| 12 | persistent-serviceworker | 33 |
| 13 | GitSyncMarks | 23 |
| 14 | m3u8 | 22 |
| 15 | GenresFox | 20 |
| 16 | simple-image-converter | 6 |
| 17 | debug-buddy-claude | 4 |
| 18 | Lumina | 3 |
| 19 | ProtoConsent | 2 |
| 20 | safe-tab-url-lister | 1 |
| 21 | french-accents | 1 |
| 22 | Linkedin-Post-Liker-and-Commenter | 1 |
| 23 | GlowReadTTS | 0 |
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