Improve YouTube! (Open-Source for YouTube)
Make YouTube tidy & powerful! YouTube Player Size Theme Quality Auto HD Colors Playback Speed Style ad block Playlist Channel H.264
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Turn Off the Lights for YouTube™ and Beyond
動画を囲むページ全体がだんだん暗くなり、まるで映画館にいる気分で、動画を楽しめます。
45,409 人のユーザー
Adaptive Tab Bar Colour
Changes the colour of Firefox theme to match the website’s appearance.
34,899 人のユーザー
FrankerFaceZ
The Twitch Enhancement Suite - Get custom emotes and tons of new features you'll never want to go without.
102,643 人のユーザー
Netflix Party is now Teleparty
Watch Netflix, Youtube, Disney Plus, Hulu, HBO, and Amazon Prime Video in sync with friends
57,723 人のユーザー
Watch2Gether
With Watch2Gether you can watch videos together with your friends. Enhance your Watch2Gether experience with our official browser extension.
55,221 人のユーザー
Alternate Player for Twitch.tv
Alternate player of live broadcasts for Twitch.tv website.
42,510 人のユーザー
Twitch Chat pronouns
Add Pronouns to Twitch Chat
15,556 人のユーザー
Librezam
Shazam APIを使用したオープンソースの音楽認識拡張機能 (代替バックエンドとしてAudd、ACRCloudのAPIにも対応しています)
14,296 人のユーザー
AudD®音楽認識
ブラウザであらゆるウェブサイトのあらゆる音楽を認識
13,526 人のユーザー
UltraWideo
The cross-browser extension that manipulates video aspect ratio to fit your entire screen. Take control over cinematic black bars. Netflix | Prime Video | Disney+ | Hulu | ESPN | + Many others...
13,229 人のユーザー
ChatReplay
Watch stream archive videos with chat replay.
12,262 人のユーザー
Twitch Ad Blocker
Tired of Ads on Twitch? Block all ads and watch videos without interruptions.
9,787 人のユーザー
YouTube Video Downloader
Free YouTube Video Downloader Online – Download YouTube Videos, Convert YT to MP3/MP4, SaveFrom.net Alternative, Fast YTD Tool for PC, Mobile, & Online. Best Video Downloader for YouTube, Y2Mate, SSYouTube, Freemake Video Downloader, and More!
8,311 人のユーザー
Purple Ads Blocker for Twitch
Purple AdBlock is a adblock for Twitch.tv
6,550 人のユーザー
Unwanted Twitch
Hide unwanted streams, games, categories, channels and tags on: twitch.tv
5,863 人のユーザー
Full Screen for Firefox
Go full screen with one click on the full screen button. That includes also the full screen movies such as YouTube, Vimeo, etc.
5,426 人のユーザー
Zoom for Firefox
Zoom in or out on web content using the zoom button and mouse scroll wheel for more comfortable reading. That to each percent value. It helps you to zoom easily in and out a web page. Thanks to the slider and the zoom buttons.
5,390 人のユーザー
Tab Volume
Control your tab volume.
5,080 人のユーザー
Stream Recorder
Firefox extension that records streams and videos.
4,501 人のユーザー
Holodex Plus
Holodex.net companion extension for enhancing the viewing experience
4,333 人のユーザー
Ad Blocker: Stands AdBlocker
How to block ads? Use Ad Blocker for Firefox - Stands Adblocker! Block all ads on YouTube, Twitch, sites, and stay protected from phishing, tracking, and malware.
3,841 人のユーザー
YouTube Downloader
YouTube Downloader – Free YouTube Video Downloader & MP3 Converter | 4K Support Easily download YouTube videos in MP3, MP4, HD, or 4K with this fast and free Firefox extension. Convert YouTube to MP3 or download videos in any format with one click.
3,824 人のユーザー