To use Android extensions, you'll need Firefox for Android. To explore Firefox for desktop add-ons, please visit our desktop site.

Log in

1,417 extensions found in Appearance

Filter results
Search results
  • Daily Habits

    Daily Habits

    Check off your daily habits and build consistent streaks

    twy_larm

  • A11y Vision

    A11y Vision

    Toggle colour blindness simulation modes on current page

    Stephin Porcia

  • Habit Track

    Habit Track

    Track daily habits with streak counter and weekly grid

    twy_larm

  • Prop Scan

    Prop Scan

    Scan page CSS for all custom properties with copy support

    Helletech

  • Flex Builder

    Flex Builder

    Build flexbox layouts visually and copy the CSS output

    rutz-ronald

  • Count It

    Count It

    Track multiple items with named tally counters

    swaswan

  • Avia Client

    Avia Client

    Adds custom font support and a QuickCSS editor to enhance Stoat Chat's interface and styling.

    AvaLilac

    3 users

  • Music Spectrum

    Music Spectrum

    Audio visualizer for YouTube and YT Music with musical notes.

    baongochaah

    3 users

  • Border Radius

    Border Radius

    Build CSS border-radius visually with per-corner control

    Watson Shimon

  • Forocoches Sin Tentaciones +18

    Forocoches Sin Tentaciones +18

    Oculta todos los hilos con contenido +18 en su título.

    Axpuru

    3 users

  • WPlace Color Hider

    WPlace Color Hider

    Extract and display all colors from WPlace color picker

    Enea

    2 users

  • Chess Helper Keyboard

    Chess Helper Keyboard

    Kontrol papan catur di Chess.com pakai keyboard.

    MRynzz

    2 users

  • PR2R

    PR2R

    Adds a button to GitHub Pull Request pages to create a Release from the current Pull Request

    daf

    2 users

  • Twitter Platform Indicator

    Twitter Platform Indicator

    Shows which platform Twitter/X posts were sent from

    dursunator

    2 users

  • Tab Highlighter

    Tab Highlighter

    Highlight your GitHub tabs with custom colors for better organization.

    NIHAL T P

    2 users

  • YouTube buzzyify

    YouTube buzzyify

    Modify YouTube thumbnails to include buzzy

    Sam Stockstrom

    2 users

  • GIS Custom Startpage

    GIS Custom Startpage

    A custom start page for Firefox

    freeman

    2 users

  • display-none-alpha

    display-none-alpha

    Hide HTML elements on any webpage with undo/redo functionality Development/alpha release for fast iterations.

    Perfect Secrecy Apps

    2 users

  • PolyMoji

    PolyMoji

    Switch emoji styles — Apple, Google, Fluent, Tossface and more

    Flashi

  • Math Calc

    Math Calc

    Advanced calculator with scientific functions and history

    Shulammit

  • Vim Keyboard Navigator

    Vim Keyboard Navigator

    Navigate web pages using Vim-style keyboard shortcuts.

    Lazareff

  • WCAG Ratio

    WCAG Ratio

    Calculate contrast ratios and check WCAG accessibility

    charise

  • Tab Capture

    Tab Capture

    Screenshot the active tab viewport and download as PNG

    Fedor Shyriaev

    2 users

  • Quick Emoji

    Quick Emoji

    Fast emoji finder with live search and one-click copy

    reignbarry

  • TTS Reader

    TTS Reader

    Read any pasted text aloud using browser speech synthesis

    Merneptah