UltimaDark - The Fastest Dark Mode Extension
UltimaDark uses agressive and smart techniques to turn even the sunniest websites into realms of darkness. Although it works well, this is so experimental, it makes lab rats look like seasoned professionals. Go ahead, embrace the shadows! 🦇
2,769 users
Snooze Tabs
Snooze Tabs help you focus your attention online, whether you want to remove distractions for now or save something for later. Hit the snooze icon to dismiss tabs you don’t want now, and set an alarm to bring them back when you need them.
2,768 users
Readability based Reader View
strips away clutter like buttons, background images, and changes the page's text size, contrast and layout for better readability. Note: This extension uses the standalone version of Mozilla's Readability library.
2,765 users
Music Mode for YouTube™
Hides the video and thumbnails on YouTube. Blocks the video keeping only the audio on YouTube Music. Additionally, it removes the ads from YouTube and allows YouTube to play in the background on mobile. Easy to use with many options.
2,721 users
Old Twitter Layout (2025)
An extension that returns old Twitter's look from 2015 or 2018. WORKS IN 2025!
2,715 users
doqment PDF Reader
Firefox's PDF Viewer with Reader Mode: change the colours of PDFs while reading.
2,636 users
Reddit Enhancer
Various tweaks to customise your Reddit experience. Supports all versions of Reddit.
2,632 users
Merge Windows
Merges the tabs from multiple windows together into one window. Extension won't show context menu item when there aren't more than one window of the same type to merge together. Private windows will only merge with private windows not normal.
2,618 users
Highlight This: finds and marks words
Automatically finds and highlights words and phrases on the web page according to your list
2,579 users
Basic JSON Formatter
Adds a page action to pretty-print JSON. Unlike similar extensions, this simply pretty-prints it. It doesn't add any kind of viewer, colors, or collapsing. If you want this to work as expected, disable devtools.jsonview.enabled in about:config.
2,571 users
Personal Blocklist (not by Google)
Blocks domains/hosts from appearing in your Google search results.
2,569 users
Better Lyrics (Lyrics for Youtube Music)
Enhance YouTube Music with beautiful time-synced lyrics, multilingual support, real-time translations and more
2,519 users
YouTube™ dual subtitles
Automatically switch to local language, bilingual subtitles, subtitle download, subtitle dubbing, custom subtitle style. Default subtitles: Set the translation language.
2,519 users
Open Subtitles
Add subtitles to any HTML5 video sites such as Youtube, Netflix, Amazon Prime Video, Disney+, HBO Max and other stream sites.
2,516 users
