JavaScript Webextension

Open-source JavaScript projects categorized as Webextension

Top 23 JavaScript Webextension Projects

Webextension
  1. floccus

    :cloud: Sync your bookmarks privately across browsers and devices

    Project mention: Floccus: Sync your bookmarks privately across browsers and devices | news.ycombinator.com | 2025-05-11
  2. SurveyJS

    JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.

    SurveyJS logo
  3. Traduzir-paginas-web

    Translate your page in real time using Google, Bing or Yandex

  4. youtube

    [top~1 open YouTube & Video browser-extension] - Enrich your experience & choice! 🧰180+ options & clever features 📌set+forget📌Longest-standing(been tough). Please join🧩us👨‍👩‍👧‍👧 ..⋮ {playback|content discovery|player|extra buttons|distractions|related videos|shorts|ads|quality|codec|full tab|full screen} (by code-charity)

    Project mention: Coming Full Circle: It starts and ends with Git and GitHub | dev.to | 2024-12-06

    Browser Extensions: As mentioned in my previous blogs when I worked on the ImprovedTube extension - I have recently been invested in learning more about browser extensions. The work I did for Le Git Graph, has taught me about the complexities of integrating with existing web applications (you have to know a lot about GitHub's interface in order to manipulate it!). Working on this extension made realize GitHub's dynamic nature requires me to carefully handle different page states and navigation patterns - and even then, there might be things that change and I'll have to update the code accordingly.

  5. browser_extension

    A browser extension that redirects popular sites to alternative privacy friendly frontends

    Project mention: Show HN: Seek Anywhere – A Chrome/Brave Extension | news.ycombinator.com | 2025-04-01
  6. privacybadger

    Privacy Badger is a browser extension that automatically learns to block invisible trackers.

    Project mention: Escape the walled garden and algorithm black boxes with RSS feeds | news.ycombinator.com | 2025-01-19
  7. web-ext

    A command line tool to help build, run, and test web extensions

  8. multi-account-containers

    Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.

    Project mention: Fixing a Bug in Google Chrome as a First-Time Contributor | news.ycombinator.com | 2024-08-26

    Interesting!

    My negative experience with Firefox was with this 6 year old feature request relating to container colors. [0] They have hardcoded some colors & icons (6 or 8 I think?) as possible options. The problem is: If you have more than half a dozen of Gmail accounts that you want to containerize (e.g. for client work), it is really hard to keep them apart at first glance. Compare this to Google Chrome, where you can choose the browser color for each associated Gmail account individually.

    I tried to manually extend & build it for myself, but the codebase relating to that was just a mindfuck to work on...

    [0] https://github.com/mozilla/multi-account-containers/issues/1...

    TL;DR: https://xkcd.com/619

  9. Civic Auth

    Auth in Less Than 5 Minutes. Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.

    Civic Auth logo
  10. ipfs-companion

    Browser extension that simplifies access to IPFS resources on the web

  11. privacy-redirect

    A simple web extension that redirects Twitter, YouTube, Instagram & Google Maps requests to privacy friendly alternatives.

  12. keepassxc-browser

    KeePassXC Browser Extension

  13. webextension-pixiv-toolkit

    A web extension for Pixiv

  14. read-aloud

    An awesome browser extension that reads aloud webpage content with one click

  15. motrix-webextension

    A browser extension for the Motrix Download Manager

  16. simple-tab-groups

    Create, modify and quick change tab groups. Inspired by the Tab Groups app :)

  17. maxurl

    Finds larger/original versions of images and videos

  18. arcfox

    Make firefox flow like arc (by betterbrowser)

  19. blocktube

    YouTube™ content blocker

    Project mention: Blocklist for AI Music on YouTube | news.ycombinator.com | 2025-02-16

    YouTube fundamentally does not respect the time or attention of users - even if you pay for YouTube Premium.

    The only way I can stomach YT at this point is with blocktube and unhook; I can disable parts of the interface, block channels and content individually or with regular expressions, and filter comments with regex - a necessity given how many scams are being run right now.

    I dread the day they drop RSS feeds for channel updates.

    https://github.com/amitbl/blocktube

    https://unhook.app/

  20. UserAgent-Switcher

    A User-Agent spoofer browser extension that is highly configurable

    Project mention: 13ft – A site similar to 12ft.io but is self hosted | news.ycombinator.com | 2024-08-19

    I use this extension which has a decent UI: https://webextension.org/listing/useragent-switcher.html

  21. shortkeys

    A browser extension for custom keyboard shortcuts

  22. webscrapbook

    A browser extension that captures web pages to local device or backend server for future retrieval, organization, annotation, and edit. This project inherits from legacy Firefox add-on ScrapBook X.

    Project mention: Scrapbook – addon that captures web pages to local device or back end server | news.ycombinator.com | 2025-03-14
  23. SearchJumper

    Yet another awesome browser extension for switching search engines, search everything (selection text / image / link / find in page) on any engine with a simple right click or a variety of menus and shortcuts. Build with React & Material-UI. (WIP).

  24. sieve

    Sieve Script Editor (by thsmi)

  25. ScratchAddons

    All-in-one browser extension for Scratch.

  26. InfluxDB

    InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

    InfluxDB logo
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).

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JavaScript Webextension related posts

  • Recap Suite for working with PACER, the data system of American federal courts

    1 project | news.ycombinator.com | 31 Mar 2025
  • Blocklist for AI Music on YouTube

    3 projects | news.ycombinator.com | 16 Feb 2025
  • Show HN: Chrome extention that links linear issues to the GitHub/Gitlab branch

    1 project | news.ycombinator.com | 5 Sep 2024
  • I Built a Browser Extension to Seamlessly Link GitLab Branches from Linear Issues! 🚀

    1 project | dev.to | 6 Aug 2024
  • Manifest V2 phase-out begins

    7 projects | news.ycombinator.com | 31 May 2024
  • Show HN: I made a CLI tool to create web extensions with no build configuration

    7 projects | news.ycombinator.com | 30 Apr 2024
  • Ask HN: Nitter officially declared "over" today, alternatives?

    7 projects | news.ycombinator.com | 15 Feb 2024
  • A note from our sponsor - InfluxDB
    www.influxdata.com | 13 May 2025
    InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →

Index

What are some of the best open-source Webextension projects in JavaScript? This list will help you:

# Project Stars
1 floccus 6,556
2 Traduzir-paginas-web 5,077
3 youtube 3,754
4 browser_extension 3,482
5 privacybadger 3,389
6 web-ext 2,869
7 multi-account-containers 2,866
8 ipfs-companion 2,120
9 privacy-redirect 2,054
10 keepassxc-browser 1,898
11 webextension-pixiv-toolkit 1,556
12 read-aloud 1,492
13 motrix-webextension 1,382
14 simple-tab-groups 1,284
15 maxurl 1,247
16 arcfox 1,171
17 blocktube 1,110
18 UserAgent-Switcher 1,107
19 shortkeys 1,077
20 webscrapbook 999
21 SearchJumper 899
22 sieve 797
23 ScratchAddons 744

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