To use these add-ons, you'll need to download Firefox.

Log in

16,970 extensions found in Appearance

Filter results
Search results
  • Claude OLED Dark real black

    Claude OLED Dark real black

    Pure #000000 OLED-black dark mode for claude.ai and claude.com — like ChatGPT's pure-black look, but for Claude.

    Dodo

    1 user

  • Again, Why Salesforce

    Again, Why Salesforce

    Create and manage custom tabs in the available space on Salesforce Lightning Setup page.

    Astisme

    1 user

  • Notion Syntax Highlighter

    Notion Syntax Highlighter

    Improves Notion's code blocks syntax highlighting + adds tons of theme options

    Jakub Serwatka

    1 user

  • YT Views Fix

    YT Views Fix

    Restores the classic YouTube homepage metadata layout, reverting the 2025/2026 single-line view count change.

    gnik0074

    1 user

  • Grayscale Filter

    Grayscale Filter

    Adds a grayscale filter to all webpages

    fab

    1 user

  • BHB聊天室背景插入插件

    BHB聊天室背景插入插件

    为BHB聊天室网页添加背景图片，7种模式任你选！

    TTPeter

    1 user

  • Auto Dark for YouTube™

    Auto Dark for YouTube™

    Automatically turns on Dark Theme at night for YouTube™

    Jeurissen Apps

    1 user

  • E-közüzem -Govern-Soft Kft.

    E-közüzem -Govern-Soft Kft.

    E-közüzem belépés után a letöltött fájlokat egyből feltölti a plugin az e-közüzem alkalmazásba

    László Leber

    1 user

  • Mortality

    Mortality

    Transform your new tab into a mindful space with age-related insights, themes, and customizable views to help you reflect and live intentionally.

    Gadgetvala

    1 user

  • AskDL

    AskDL

    Remove the "Ask a question" button from YouTube videos

    Hardok

    1 user

  • mesmerized

    mesmerized

    Transform your new tabs. Be inspired with the beautiful backgrounds, inspirational quotes, weather forecasts, to-do lists and more.

    Emad Alam

    1 user

  • Two Columns Wikipedia

    Two Columns Wikipedia

    Shows Wikipedia articles in two columns

    alinares

    1 user

  • X Comments Reader

    X Comments Reader

    Lets you read X post comments without leaving the timeline. Just hover on it.

    Hobbyt

    1 user

  • Twitter - Replace bookmarks with likes

    Twitter - Replace bookmarks with likes

    If you are old school and keep using like to favorite tweets, an extension for you

    Zeh Fernandes

    1 user

  • JSON Expander for Splunk

    JSON Expander for Splunk

    Expand deeply nested JSON objects in Splunk with a single click.

    aserpi

    1 user

  • Custom Dark New Tab

    Custom Dark New Tab

    A dark-mode new tab page with customizable search, weather, clock, notes, and quick links.

    cooper12

    1 user

  • BitMEEEX USD Display

    BitMEEEX USD Display

    Shows all prices in USD (US Dollars) instead of XBT (Bitcoin) on bitmex.com.

    Trading Joe

    1 user

  • Instabar

    Instabar

    Show scrollbar on Instagram

    def00111

    1 user

  • GemTab

    GemTab

    Sets the browser tab title to the name of the active Gemini chat.

    Conscious Bot

    1 user

  • MarmoGlow

    MarmoGlow

    A UI extension that adds improved styling and a modern interface to the University of Waterloo's Marmoset submission server.

    Davis Liu

    1 user

  • Page Title Changer

    Page Title Changer

    Quickly changes the page title to whatever text you've highlighted.

    RatirefureDev

    1 user

  • Instagram Schrift

    Instagram Schrift

    Erstellen Sie Texte mit 38 schönen und kostenlosen Schriftarten für Instagram.

    InstaZoom

    1 user

  • Graylog JSON Prettify

    Graylog JSON Prettify

    Pretty-print JSON fields in Graylog log entries with collapsible tree view and color themes.

    Tiny Apps

    1 user

  • Hourglass in seconds

    Hourglass in seconds

    Adds a default button for all Hourglass fields, a "Next business day" button, a "+ Add" Summer Hours button, and more.

    SamVK

    1 user

  • FHVT Animated Theme

    FHVT Animated Theme

    Tema animado completamente personalizable, que no pondrá lento tu ordenador.

    FHVT

    1 user