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

Log in

14,535 extensions found in Web Development

Filter results
Search results
  • HeaderMod

    HeaderMod

    Modify request and response headers per profile, with URL and resource filters, tab lock, pause, and cloud backup.

    ibaciu6

    32 users

  • DNS Checker

    DNS Checker

    Check DNS of current website

    dns-checker

    32 users

  • ChatGPT Full Width

    ChatGPT Full Width

    Make ChatGPT output use the full width of the available space.

    oscar

    32 users

  • JS Dialog Controller

    JS Dialog Controller

    Hide Javascript Alert, Confirm Dialog Controller

    C Tech Hindi

    32 users

  • Github Issue Reactions

    Github Issue Reactions

    List a link of reactions on a github issue and pull request page

    Norfeldt

    32 users

  • Fire Page Editing

    Fire Page Editing

    Inject HTML, CSS or JavaScript into any web-page. The changes you make are applied everytime you visit the specified website(s).

    Francesco De Stefano

    32 users

  • Advanced WebRTC Internals

    Advanced WebRTC Internals

    This extension provides WebRTC Internals for Firefox. You can get a detailed graph-based view of WebRTC PeerConnections currently present in the browser using this extension.

    Faihan

    32 users

  • Gemini Font

    Gemini Font

    Customize fonts, sizes, colors & line spacing for Gemini AI chat. Full RTL Arabic support included.

    AtSbi

    32 users

  • Images Downloader

    Images Downloader

    Extract links and images from pages you visit: depth crawl, regex and size filters, per-site presets, live re-filter, blacklist, and batch download. Data stays in your browser.

    nWolt

    32 users

  • Edit Anything

    Edit Anything

    Toggle contentEditable so you can change any text on a web page.

    Forrest Almasi

    32 users

  • AI Page Translator

    AI Page Translator

    Translate web pages using AI (OpenRouter API). Powered by LLMs like Gemini 3, Claude 4.5, GPT-5 and more.

    BlcSzha!

    32 users

  • Website Information

    Website Information

    Shows extended information about website: cookies, local storage, resources: scripts, images, iframes, css. Allows to remove cookies and storage data.

    Firefox user 14320958

    32 users

  • ASINsell Amazon Product Review Request Tool

    ASINsell Amazon Product Review Request Tool

    Request Amazon product reviews auto and track & manage all of your product reviews in just 1 place

    ASINsell

    32 users

  • Jsmon Security Analyzer — Web Security Inspector

    Jsmon Security Analyzer — Web Security Inspector

    Capture and analyze browser traffic in real time. Detects exposed secrets, shadow APIs, and supply chain risks in JS, HTML, JSON, YAML, and 20+ file types. Powered by Jsmon.

    Jsmon

    32 users

  • 192.168.1.1 تسجيل الدخول إلى بوابة الراوتر

    192.168.1.1 تسجيل الدخول إلى بوابة الراوتر

    192.168.1.1 Router Gateway Login هو الحل الأمثل للوصول السريع والآمن إلى صفحة إعدادات جهاز التوجيه الخاص بك.

    192.168.1.1 صفحة اعدادات الراوتر

    32 users

  • Pagedit - Edit the text of a webpage

    Pagedit - Edit the text of a webpage

    Pagedit lets you edit the text of a webpage. This extension is useful for content writers or developers willing to check if their content will fit into the page layout.

    Julien_He

    32 users

  • Gemini Conversation Exporter

    Gemini Conversation Exporter

    Geminiの会話の文字数と、おおよそのトークン数をリアルタイムで表示します。

    h.Kuro.cat

    32 users

  • FastRPC

    FastRPC

    FastRPC decoder

    Ondřej Žára

    32 users

  • 4play

    4play

    4play and dominate

    lolcat

    32 users

  • TaboonPlus

    TaboonPlus

    Plugin which automatically switches all tabs in browser by the cycle. It may be very useful for system performance dashboards if you need to watch few dashboards from different systems in one browser window. You also can configure switch interval.

    Firefox user 12520484

    32 users

  • SalesforceProductionWarning

    SalesforceProductionWarning

    Help Salesforce Developers and Admins to distinguish Sandbox and Production easily by border page red.

    Kealsalas

    31 users

  • Discord User/Channel/Message ID all get tool

    Discord User/Channel/Message ID all get tool

    This add-on has the following features All user ID retrieval All channel ID retrieval All message ID retrieval v8.0 : Fixed a bug where message ID retrieval did not work with DMs

    Gushini chick

    31 users

  • Display Window Size

    Display Window Size

    "Display Window Size" is a handy Firefox addon that allows users to view the current window size of their browser. With this addon, users can easily see the dimensions of their browser window and adjust elements on webpages more accurately.

    123B

    31 users

  • Text to QR/Barcode Converter

    Text to QR/Barcode Converter

    This extraction helps to generate a QR code or barcode image based on the selected text.

    Kush

    31 users

  • AWS Signer Browser

    AWS Signer Browser

    Automatically sign Amazon Web Services (AWS) API requests

    Frederick Zhang

    31 users