14,665 extensions found in Appearance

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RotateView
Rotate the entire page or rotate fullscreen view to best fit the device aspect ratio
Rated 3.6 out of 5
thabubble
920 users
YouTube SpeedUp
A simple Firefox extension to speed up YouTube videos.
Rated 4.1 out of 5
GoliafRS
920 users
SpoPlus - Edit Spotify Theme & Settings
2026 • Spotify extension that allows you to bring back classic heart button, set up new themes, fonts, remove annoying notifications, popups, and many more!
Rated 4.9 out of 5
fullstackdev
920 users
CustomCSS Injector
- Apply any CSS rules for any websites, including iframes. - Whitelist and Blacklist functionality - Apply CSS rules to specific URLs, Domains or Globally - Syntax highlighting & line numbers - Update without page refresh
Rated 4.4 out of 5
Blizz3
917 users
Resize Window & Viewport
Resize browser window or viewport to desired screen widths. Firefox's Responsive Design Mode (Ctrl + Shift + M) is great for mobile devices emulation.
Rated 3.3 out of 5
Moris Papasmadov
908 users
Youtube mp3 & video downloader
Firefox extension to convert and download Youtube all videos for free in MP3 format.
Rated 3.4 out of 5
fonexsoftware.com
905 users
Mute Tab
Full control of noisy tabs with keyboard shortcut support
Rated 4.8 out of 5
Balvin
901 users
Smarter Smartschool
- Adds a point total to Smartschool. - Adds custom theming to Smartschool.
Rated 3.4 out of 5
WaTh
900 users
Sakuga Extended
Enjoy a better experience with SAKUGABOORU! Previews on posts, frame control on videos...
Rated 5 out of 5
Wevolve Team
898 users
VisusGG
VisusGG, a browser extension by x3picF4ilx (Bytenote) & MrMaxim, aims to improve the user experience on FACEIT's platform.
Rated 1 out of 5
Bytenote
898 users
Color Changer
Change a page's text, background, and link colors to your liking.
Rated 4.1 out of 5
webextdev
895 users
Audible Volume Control
Adds a volume controller to the Audible web-player.
Rated 4.9 out of 5
Peter
894 users
Simplify Gmail
Your time and attention matter -- Simplify Gmail enhances Gmail to boost productivity, strengthen privacy, and reduce stress. From the co-founder of Google Inbox.
Rated 4.6 out of 5
Michael Leggett
893 users
JSON Viewer
Просмотр JSON файлов прямо в браузере
Rated 3.3 out of 5
li0ard
892 users
Copy As Plain Text
Easily copy the selected text without formatting to the clipboard via right-click menu.
Rated 2.9 out of 5
ilGur
890 users
Tab Unloader for Tree Style Tab
Tab unload options for Tree Style Tab.
Rated 4.8 out of 5
Lej77
889 users
Simple Gmail Notes
Add notes to email threads in Gmail.
Rated 4.5 out of 5
Bart Solutions
889 users
Tab counter
Displays the number of tabs in the active window.
Rated 4.6 out of 5
WaldiPL
889 users
Format Link
Format a link and copy it to the clipboard in your favorite format. You can use keyboard shortcuts, the toolbar button, or context menus to copy a link. You can escape meta characters, for example ] (closing square bracket) in markdown title.
Rated 4.3 out of 5
Hiroaki Nakamura
887 users
2048 in Popup
Play 2048 anytime you want, it's always in your browser!
Rated 4 out of 5
al3k_popov
884 users
Open in Microsoft Edge
Opens current tab in Microsoft Edge (by simply adding 'microsoft-edge:' to the URL, no additional native software needed).
Rated 4.6 out of 5
Alphalpha
884 users
TST Bookmarks Subpanel
Provides a bookmarks subpanel for Tree Style Tab's sidebar.
Rated 4.7 out of 5
Piro (piro_or)
884 users
Font Contrast
Improves webpage readability.
Rated 4.4 out of 5
Francesco Fusco
884 users
Sticky Notes
Simple sticky notes utility which provides facility to make small notes of any thing.
Rated 3.7 out of 5
Trishul
880 users
Manga Downloader
Download Manga/Manhua/Manhwa/Webtoons/Comics chapters as PDF/ZIP(images) from many websites.
Rated 4.9 out of 5
AdilAllali
880 users