12,071 extensions found in Appearance

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Local Image File Viewer
Next and previous buttons for viewing images in local file URLs to browse folders.
Rated 5 out of 5
Sam Larison
260 users
Enforce Browser Fonts
Enforce browser fonts easily instead of letting websites use their own fonts. Easily toggle between browser fonts and website fonts by clicking on addon toolbar icon or its keyboard shortcut (Alt-Comma).
Rated 4.5 out of 5
Jayesh Bhoot
260 users
Grammarly Dark
A dark theme for Grammarly documents.
Rated 2.5 out of 5
Bart Zalewski
260 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
260 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
260 users
Shuffle Tabs
Add a toolbar button which rearrange tabs in random order when clicked.
Rated 5 out of 5
Firefox user 13960281
260 users
Lovely forks
Show notable forks of Github projects.
Rated 4.9 out of 5
musically_ut
259 users
Sound Booster
Adjust audio volume up to 600%
Rated 5 out of 5
Developer
257 users
Somtoday Mod
Pas het uiterlijk van Somtoday aan. Voegt een dark mode, achtergrondafbeeldingen, lettertypes, kleuren en meer toe.
Rated 4.9 out of 5
Jona Zwetsloot
256 users
Mainichi
Learn Japanese each time you open a new tab.
Rated 4.8 out of 5
mainichi
256 users
mywebook clipping tool
Use mywebook clipping tool browser extension to save articles, videos, images, products, discussions and more to your account for later reading and easy access.
Rated 3.5 out of 5
mywebook.com
255 users
定时刷新页面和触发按钮事件
可自定义时间定时刷新当前页面，也可以自定义按钮ID定时触发该按钮点击事件，类似按键精灵效果
Rated 5 out of 5
疯狂插件
255 users
Fake YouTube premium
It changes the YouTube logo to Premium logo to fake having YouTube Premium
Rated 4.8 out of 5
vipal
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
Podcast Player Prime
An easy-to-use and lite podcast player.
Rated 3.6 out of 5
mark
253 users
Webtoons dark mode
Changes background color from white to black, when viewing a comic on webtoons.com
Rated 3 out of 5
azerzy
253 users
Google Scholar DarkMode
Change the appearance of Google Scholar to dark mode.
There are no ratings yet
EveSquare
253 users
Todo
A todo addon which lets you to keep a track of your work, stays in browser and available on just a click. Add your tasks with a click or just enter, mark them done, or remove it from list.
Rated 4.2 out of 5
Trishul
253 users
Night
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
Rated 5 out of 5
Dark
252 users
Pacman
All favorite game Pacman does not lose its relevance. You can play it right in your browser, even offline.
Rated 3.8 out of 5
mr_JSm1th
252 users
Custom Site JS
Run your own (per url or domain) custom JavaScript on sites.
Rated 4.5 out of 5
David Hicken
252 users
Alexa RANK
Alexa Traffic Rank is Alexa Internet's free extension for Mozilla. Alexa Traffic Rank accompanies you as you surf, providing you with Alexa.com data about the sites you visit without interrupting your browsing.
Rated 3.5 out of 5
thoduongluat.com
251 users
Popout
Popout is simple extension that allows tabs to be opened in a separate minimal window.
Rated 3.3 out of 5
Space City Software, L.L.C.
251 users
Link Control
Adjust the color of your previously viewed links.
Rated 3.7 out of 5
John Datserakis
251 users
10 Minutes Email - 10 min disposable email
Temporary disposable email address. Protect your email from spam, bots and phishing with 10minemail.
Rated 4.7 out of 5
Privatix
251 users