10,902 extensions found in Appearance

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Toolbar Clock
Stylish analog clock for your browser toolbar.
Rated 4.3 out of 5
Muyor
259 users
AutoTube
Adds a switch to toggle auto replay of the current YouTube video
Rated 2.6 out of 5
Sarah
259 users
Enlight
Syntax highlight for raw source code.
Rated 4.6 out of 5
Qeole
259 users
Color Picker
Pick up amazing color on one click
Rated 1.8 out of 5
Lokdien
258 users
SCPper for Firefox
Handy little thing to improve your SCP browsing experience
Rated 4 out of 5
FiftyNine
258 users
Characters Counter
Find out how many characters there are in a selection by simply right-clicking it.
Rated 3.3 out of 5
Minkiu
258 users
SteamProfilePreviewer
Adds a preview button to the items on the Steam points shop to showcase them on YOUR profile.
Rated 4.2 out of 5
Miko
258 users
Comic Sans Everywhere
Firefox addon that changes the font of every piece of text into Comic Sans MS. Can be toggled through a toolbar button. For more information and source see the github page.
Rated 4.9 out of 5
pieterman2000
256 users
Bookmarklets context menu
Add a context menu item contains only bookmarklets from bookmarks. With this extension, bookmarklets can make cross-origin requests, write to the clipboard, communicate with addons, etc. NEVER use untrusted bookmarklet!
Rated 4.7 out of 5
Mems
256 users
Letterboxd minutes to hours
Converts minutes to hours on letterboxd
Rated 4.8 out of 5
Devhoven
256 users
Outlook Web Enhancement
Make your email experience better with visual improvements such as removing advertisement messages and unnecessary clutter.
Rated 5 out of 5
Wolf
256 users
Bookmark Dial
Replaces the default New Tab page and displays the contents of a bookmark folder including a thumbnail every time you open a new tab. The homepage is also replaced unless you choose not to. Check out the screenshots
Rated 3.3 out of 5
Sebastian Blask
255 users
Dark YouTube Theme - Black YouTube Theme
Black YouTube. Black YouTube theme protects eyes by changing Youtube
Rated 4.2 out of 5
Package tracker
255 users
New Tab Beside
A simple extension that opens new tab or duplicates right beside the current tab. Many other browsers have "open a new tab right next to current tab" feature built in but not Firefox, and so this extension was created.
Rated 4.4 out of 5
Firefox user 13285943
254 users
Moyennes MyGES
Calcul automatique des moyennes sur MyGES.
Rated 4.8 out of 5
roboto
254 users
CSDN便利助手
删除关注、复制限制
Rated 5 out of 5
Dingzb
254 users
Mainichi
Learn Japanese each time you open a new tab.
Rated 4.8 out of 5
mainichi
254 users
Clock
Date & time
Rated 5 out of 5
pothosru
253 users
Podcast Player Prime
An easy-to-use and lite podcast player.
Rated 3.6 out of 5
mark
252 users
Add to Dropmark
A quick way to add links, images, and screenshots to your Dropmark collections.
Rated 4.6 out of 5
Dropmark
252 users
Viewport
Displays the current viewport size when resizing the browser window.
Rated 2.9 out of 5
Kameron
252 users
Reddit Sidebar Hider
This simple extension toggles the sidebar on Reddit to reclaim some space the sidebar wastes. To toggle the sidebar click the icon in the upper right corner. DOESN'T WORK WITH REDDIT REDESIGN. Source : https://github.com/kiddico/Reddit-Sidebar-Hider
Rated 3.6 out of 5
Firefox user 12605971
251 users
Wide GPT
Scale ChatGPT output to 100% width. Source in description. Works for free and paid version.
Rated 3.9 out of 5
Johannes Thyroff
251 users
Clock-minutes
Adds minutes part of your clock to your Toolbar. No permissions required.
Rated 4.7 out of 5
ppp
251 users
Twitch: Hide Elements
Hide Twitch visual elements like Recommended Channels, Prime Loot, etc.
Rated 4.8 out of 5
Baltimora
250 users