Quick Notes
Attach personal notes to any webpage. Notes are saved per URL and accessible anytime from the toolbar. Perfect for research, reminders, and annotations.
0 users
art-masterpiece-gallery-quiz
Test your knowledge of world-renowned fine art paintings, artistic movements, classical masters, and gallery masterpieces through an interactive evaluation module.
YouTube Eiko Progress Bar
Recolors the YouTube progress bar to orange and adds a custom scrubber image, eiko.
0 users
Thematic
Thematic is a free, open source web style changer 🎨🎭, it lets you specify color palettes to be used across the web
0 users
ArchitecturalHeritageQuiz
Test your knowledge of world famous architectural monuments, historic structures, and modern engineering marvels through an engaging browser popup quiz.
DarkMode Plus
Transform websites with 10 beautiful dark themes, smart color adjustments, and eye-friendly browsing.
0 users
Colorize for GCP Console
Color the Google Cloud console header per project, so you can tell production from staging at a glance. Firefox/Zen port of yfuruyama's gcp-console-colorize.
Subtitle Mask
Cover subtitles or any part of a webpage with a movable, resizable mask.
Tab Collections Manager
Organize tabs into persistent collections. Supports native tab groups, Multi-Account Containers, and tab hiding.
0 users
Pins After Dark
Turns Pinterest dark, properly. Four background tones including true black, five accents, and an optional dimmer for the pins themselves so a grid of bright photographs stays comfortable. Two application modes: a tuned stylesheet for the real interfa
New Tab GameBanana Maps Q2 + HL + CS
New tab with Quake II, Half-Life, and Counter-Strike 1.6 map backgrounds from GameBanana, top sites bar, and daily auto-refresh.
0 users
UrTab
Initial Firefox release of UrTab v2.3. Features include interactive HTML5 canvas backgrounds, Muslim prayer times via the Aladhan API, 5-day weather forecasts via the Open-Meteo API, and customizable clock, quote, and quick-link widgets.
0 users
KZT to RUB Converter
Автоматическая конвертация цен из тенге (₸) в рубли (₽)
PhotographicOpticsMaster
Master photographic optics, exposure triangles, sensor physics, and camera mechanisms through daily interactive challenges.
Couch YT View
Loads the television build of the video site in a desktop window by presenting a television identifier for that page only. Pick from four device profiles or paste your own, choose whether the app's data requests are included, and tidy the window with
architectural-wonders-puzzle-hub
Explore legendary global architecture, historic monuments, and engineering milestones through an interactive puzzle trivia extension.
Franchisify
For those people who are offended by the very mention of the English football franchise in Milton Keynes - it replaces the offensive references with a more palatable description on selected web pages (e.g. BBC Sport, Sky Sports, EFL).
0 users
Environment Favicon Switcher
Switch favicons, badges, and tab titles according to the current environment.
0 users
