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

Log in

12,221 extensions found in Web Development

Filter results
Search results
  • Grayscale Filter

    Grayscale Filter

    Adds a grayscale filter to all webpages

    fab

    1 user

  • PJe - Painel

    PJe - Painel

    Painel em aba com polos ativo/passivo e classificação civil/criminal.

    kairiroberto

    1 user

  • Simple New Tab (enchanced)

    Simple New Tab (enchanced)

    A fork minimalist, configurable new tab page with extensive features.

    VK0_0VK

    1 user

  • Axia Protocol — Content Origin Check

    Axia Protocol — Content Origin Check

    Verify content and page provenance across the web — images, videos, documents and notarized webpages signed with Axia Protocol.

    Kiril

  • InterSystems IRIS

    InterSystems IRIS

    InterSystems IRIS documentation search

    Eduard

    1 user

  • archive-dl

    archive-dl

    adds metadata xml links to stream_only archive.org pages

    briaguya

    1 user

  • Soda PDF Online

    Soda PDF Online

    Quickly access PDF processing tools from Soda PDF.

    soda pdf online

    1 user

  • LogForge

    LogForge

    LogForge captures your browsing activity and generates realistic server-style access logs. Perfect for developers and DevOps engineers who need test data for log parsing pipelines, monitoring dashboards, or log analysis tools. Supports Apache, Nginx,

    David Vilaverde

    1 user

  • HackBar

    HackBar

    A HackBar for google chrome/firefox browser. Small tool for pentesting websercurity.

    Luckywin

    1 user

  • Package Hub

    Package Hub

    Display dependencies for many package managers on GitHub

    Ezinwa Okpoechi

    1 user

  • Outline Headings

    Outline Headings

    "Outline Headings" is a comprehensive Firefox addon designed to enhance your browsing experience by providing a clear outline of webpage headings. With this addon, you can easily navigate through content sections, making it effortless

    MB66

    1 user

  • DevFlip

    DevFlip

    Hover any element to highlight ALL siblings with the same class. Tailwind-aware, copy-ready. Built for developers.

    Freakin18

    1 user

  • Link Util

    Link Util

    Inspect any link: strip tracking parameters, generate QR codes, and recursively decompose URLs into their components - query params, JWTs, Base64, JSON, and nested URLs - all from a right-click or the toolbar.

    rbasoalto

    1 user

  • Browser Purge Pro

    Browser Purge Pro

    Completely clear history, passwords, downloads, and serviceWorkers.

    Hartman

    1 user

  • Ligue des fusées

    Ligue des fusées

    Parce que Ligue des fusées est quand même mieux que Rocket League

    Firefox user 13133888

    1 user

  • File Diff Tools

    File Diff Tools

    View and search 118 essential file difference utilities: diff, diff3, sdiff, wdiff, patch, diffstat, and related tools. • Safe offline sidebar reference for Firefox desktop. No tracking. No data collection. No permissions required.

    Libor Benes (Dr. B)

    1 user

  • Copy Document

    Copy Document

    Copy Document to with Single Mouse Click.

    Tom

    1 user

  • CBOR viewer

    CBOR viewer

    Decode CBOR to JSON, making it render using the browser JSON engine.

    Thibault

    1 user

  • API Tester Sidebar

    API Tester Sidebar

    Send API requests and view responses from a sidebar.

    DEBET - Nen tang cuoc the thao hien dai

    1 user

  • YouTube Layout Customizer

    YouTube Layout Customizer

    Custom YouTube layout extension that lets you adjust video grid size, spacing, title appearance, and hide Shorts or live content for a cleaner browsing experience.

    Anwar

    1 user

  • QuickSnip Sidebar

    QuickSnip Sidebar

    Instant search results from QuickSnip into your browser sidebar

    Chandra Kant

    1 user

  • FlowState - Pomodoro Timer & Todo List

    FlowState - Pomodoro Timer & Todo List

    A tactile, sensory-focused Pomodoro & Todo browser extension that grounds digital work in analog warmth.

    Jaskirat Anand

  • CookiePal: GCM Debugger

    CookiePal: GCM Debugger

    Diagnose Google Consent Mode issues on any site. Free, no account. Works with any consent banner.

    Cookiepal

    1 user

  • IFrame Changer

    IFrame Changer

    Simple website replacement through IFrame. Specify the source site and the URL to display in the address bar.

    giahoki

    1 user

  • Multi-time converter

    Multi-time converter

    Instantly convert time between different timezones with intelligent time string detection, with two clicks.

    Will of the Fox

    1 user