10,974 extensions found in Appearance

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Night Mode - Dark Theme
A universal dark theme. Night Mode is an extension that helps you quickly turn the screen (browser) to dark at night time. Toolbar button serves as an On & Off switch which enables you to easily and quickly turn the extension On or Off.
Rated 3.8 out of 5
Simple Inc.
431 users
Twitter Lume Reskin
Popular Dark Lume userstyle for Twitter, redone as a Mozilla Firefox Addon.
Rated 5 out of 5
Trixille
431 users
FreshView for YouTube™
Hide YouTube™ videos you've already watched to easily discover fresh content.
Rated 3.2 out of 5
Mikhail Andrenkov
430 users
Custom CSS
Overwrite or inject custom CSS into website.
Rated 3.8 out of 5
Kenny Ooi
430 users
UsableHomeButton
Button for opening home page of any current site, with menu with parent URLs, items for opening in private window, copying titles and URLs, forgetting site or page, etc.
Rated 4.8 out of 5
Marat Tanalin
429 users
Twitter検索プラグイン
Firefox 70.0.1 現在の既定のTwitter検索プラグインは、Twitter の新しいUIに対応しておらず、スラッシュが文字化けします。
There are no ratings yet
100の人 (エスパー・イーシア)
428 users
Youtube Skip Sign-in
This extension hides automatic sign-in pop-ups on Youtube.
Rated 3.5 out of 5
Kiko
428 users
Hide Google Doodles
Hide Google Doodles for a less distracting search experience.
Rated 4.6 out of 5
Hide Doodles
428 users
Popup To Tab
Turns all popup windows into tabs (of the current window). Simply right-click on any tab and choose 'Move Popups Here'.
Rated 4.5 out of 5
em_te
427 users
ZIP Manager
Open local and remote ZIP archives to extract all files or a single one
Rated 5 out of 5
Lunu
427 users
Search with Google Map
Right-click to search the selected text with Google Map
Rated 4.5 out of 5
Shing Lyu
427 users
MPT Fullscreen
Makes the Browser Fullscreen when opened.
Rated 3.2 out of 5
Mejía Polanco Technology Solutions
427 users
PlantUML Visualizer
A Chrome / Firefox extension for visualizing PlantUML descriptions.
Rated 5 out of 5
WillBooster Inc.
426 users
Page Translator
Translate any webpage on the fly
Rated 3.5 out of 5
Fire360Boy
424 users
Print Button
Easily print any page with just one click!
Rated 3.5 out of 5
Allen
424 users
Extra sounds
Extra sounds for your Firefox (Navigation, downloads, and more)
Rated 4.7 out of 5
Jawhien
422 users
Resoomer
Summarize your articles online in 1 clic
Rated 4 out of 5
Resoomer
421 users
Gmail Show Time
Shows full date/time in email listing and detail headers.
Rated 4.1 out of 5
CleverInsert
419 users
WebStickies
Sticky notes for the Internet
Rated 4.2 out of 5
Lawrence
418 users
Google Art Project
Art Project masterpieces from Google Cultural Institute in your Firefox's new tabs WebExtension replacement: https://addons.mozilla.org/en-US/firefox/addon/new-tab-time-date/
Rated 2.9 out of 5
Jeremy Schomery
417 users
Email Notifier
A lite notifier that works with Gmail™, Yahoo, Live, iCloud, Mail.com and GMX
Rated 3.5 out of 5
Morni
417 users
Hide Discord Sidebar
Hide Discord Servers and Channels! Installs a button that hides/shows the Discord server list and autohides the channels list.
Rated 4.9 out of 5
PatrickxChong
417 users
umami
e621 enhancement
Rated 4.6 out of 5
Wolfgang
416 users
Pulltab Fullscreen - hide taskbar
this addon will give you a pulltab on the right side of your screen, it will put any website into fullscreen aka hide the address-bar. save space on your mobile device and make the user experience of most websites more similar to standalone apps!
Rated 4.8 out of 5
Justnotthisway
416 users
HybridTvViewer
With this add-on, your browser will not download HbbTV/CE-HTML/BML/OHTV web pages (i.e. iTV applications) but will provide a simulator enabling underneath technological features (OIPF,DVB,...)
Rated 4 out of 5
Karl
416 users