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

Log in

11,742 extensions found in Web Development

Filter results
Search results
  • ElementQuery

    ElementQuery

    Query CSS selectors by clicking elements on any webpage

    ness4laizip

    17 users

  • CSSInspect

    CSSInspect

    Inspect any page element and copy its CSS selector path

    ness4laizip

    17 users

  • MyRoutes Routeplanner

    MyRoutes Routeplanner

    Routeplanning tool for hikers, runners, cyclists, who want to follow their own specific path on a more detailed map

    Fullhdpixel

    17 users

  • Browser Calories

    Browser Calories

    The easiest way to measure your performance budget

    Zeno Rocha

    17 users

  • StarterTab - Your next New Tab

    StarterTab - Your next New Tab

    A fully customizable webapp to replace your 'New Tab' homepage.

    allig256

    17 users

  • GitHub Markdown Exporter

    GitHub Markdown Exporter

    Export GitHub issues and discussions to markdown format

    fefedu973

    17 users

  • Export HTML Table to JSON/CSV

    Export HTML Table to JSON/CSV

    Instantly export HTML tables from any webpage into JSON or CSV formats.

    Michel Leonard

    17 users

  • LetXPath

    LetXPath

    XPath Finder, simple and useful, open-source project by LetCode with Koushik

    Giới thiệu Fabet

    17 users

  • Banner Maker

    Banner Maker

    Create ASCII text banners in multiple classic styles

    kossmann

  • UARotate

    UARotate

    Rotate User-Agent automatically to mask your browser identity

    dexter

    17 users

  • MD Table Gen

    MD Table Gen

    Build and copy Markdown tables with live preview output

    Haasa Chinasa

  • Color Blind Sim

    Color Blind Sim

    Simulate color blindness filters on the current webpage

    rojas.nicole

  • FocusLock

    FocusLock

    Pomodoro-style focus timer that locks distracting sites during sessions

    Albert Lowew

  • Anchor Jump Map

    Anchor Jump Map

    Browse page headings as a clickable table of contents. Available in English, Russian, and Ukrainian.

    elianmid

    17 users

  • Design Tokens

    Design Tokens

    Inspect and copy CSS variables used on any website

    Radbod Itzayana

  • ScriptBlock

    ScriptBlock

    Block or allow third-party scripts per domain with one toggle

    Catarina

  • API Response Diff

    API Response Diff

    Make two requests to the same URL with a delay and visualise the response diff.

    marilyn

    17 users

  • Quick Weather

    Quick Weather

    Fast current weather lookup with hourly forecast data

    Zuzor

  • Page Confetti

    Page Confetti

    Add a floating confetti button to any page. Available in 6 languages.

    Eliooroz

    17 users

  • UUIDrop

    UUIDrop

    Generate UUIDs v4, v1-style and ULIDs from the toolbar instantly

    Raybon

  • Custom Cursor

    Custom Cursor

    Replace the page cursor with a custom color dot style

    Gustav Obranch

  • VisitLog

    VisitLog

    Track visited pages and domains with visit counts and timestamps

    Akbarbale

    17 users

  • QRDrop

    QRDrop

    Generate a QR code for the current tab URL instantly

    Gagez

    17 users

  • TabCount

    TabCount

    Live badge showing total open tab count across all windows

    Osmon

    17 users

  • TabMeter

    TabMeter

    Tab meter — live count of open tabs shown in the toolbar badge

    Osmon

    17 users