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

Log in

8,739 extensions found in Web Development

Filter results
Search results
  • Superposition helper

    Superposition helper

    Open the current page in Superposition and export its design tokens to code and design tools

    Firstversionist

    28 users

  • Newtube (YoutubeStyleCustomizer)

    Newtube (YoutubeStyleCustomizer)

    A tool for YoutTube that have a lot customizable and easy to use. You can use it by not have to know about code.

    AzPepoze

    28 users

  • HTML Download

    HTML Download

    Download HTML content to .html file

    Juan Pablo

    27 users

  • Ping Blocker

    Ping Blocker

    Prevents sites from tracking you by blocking the PING request!

    Leonardo

    27 users

  • Erase Cookies Now

    Erase Cookies Now

    Delete all cookies for a website with a single click.

    Geoffrey De Belie

    27 users

  • Unix Converter

    Unix Converter

    An easy-to-use all-in-one Unix Epoch timestamp converter. Just hold CTRL and highlight a number! The extension has settings such as converting to a specific timezone and format. Also includes other ways of converting within the popup.

    IsaacOram

    27 users

  • 1-Click Excel sheet Downloader

    1-Click Excel sheet Downloader

    A add-on to convert html to excel file

    Firefox user 12762503

    27 users

  • Selector Gadget Zen

    Selector Gadget Zen

    Inspect HTML elements and copy their CSS or XPath selectors.

    OmniManYolo

    27 users

  • Udacity Front End Feedback

    Udacity Front End Feedback

    Immediate, visual feedback about any website's HTML, CSS and JavaScript.

    Udacity, Inc

    27 users

  • AppLinks

    AppLinks

    AppLinks intercepts application links such as "slack://" and lets you inspect them before opening them in Firefox. Also allows to export the opened links for further analysis. Also scans QR codes to extract deep-links.

    MasterSplinter

    27 users

  • Bluelight Blocker

    Bluelight Blocker

    Reduces blue light emission for better sleep and eye comfort

    Dr Bates App

    27 users

  • Code Beautify

    Code Beautify

    All Developer Friendly tools at your finger tips such as JSON Formatter, XML Viewer, SQL Formatter, Numbers to Words converters.

    Code Beautify

    27 users

  • JSON Viewer

    JSON Viewer

    A modern UI for viewing and manipulating JSON

    dan3988

    27 users

  • One Click W3C Markup Validation

    One Click W3C Markup Validation

    Sends the current page to the W3C Markup Validation Service.

    tr-wp.com

    27 users

  • Bankiros currency envelope

    Bankiros currency envelope

    Currency exchange rate calculator - automatic conversion of currencies from one monetary unit to another at the rate of the Central Bank of the Russian Federation.

    casiliose

    27 users

  • BrutScope Extractor

    BrutScope Extractor

    Extract wildcard and standard domains from bug bounty scopes directly from web pages with a single click.

    Brut Security

    27 users

  • Webex Meetings Policy

    Webex Meetings Policy

    Webex Meetings policy settings for companies

    Cisco WebEx

    27 users

  • Ad Blocker UltraBlock Pro

    Ad Blocker UltraBlock Pro

    🛡️ The ultimate AI-powered ad blocker with CAPTCHA solver and military-grade security. Block ALL ads, trackers, and malware while browsing 35% faster. Beautiful interface, zero configuration, 100% free forever.

    UltraBlock Pro - Ultimate Ad Blocker

    27 users

  • Browser Calories

    Browser Calories

    The easiest way to measure your performance budget

    Zeno Rocha

    27 users

  • Open in Mermaid editor

    Open in Mermaid editor

    Open embedded diagrams in a Mermaid editor Supported editors: mermaid.live Supported diagrams: mermaid.ink, kroki.io Source code at https://github.com/serverwentdown/open-in-mermaid-editor

    Ambrose Chua

    27 users

  • ChatGPT Search For FF

    ChatGPT Search For FF

    Change default search engine to ChatGPT search. ChatGPT Search For FF integrates ChatGPT's AI capabilities directly into your browser's search functionality, providing intelligent, conversational responses alongside traditional search results.

    David Mir

    27 users

  • Github Aid - repo file size

    Github Aid - repo file size

    Displays github repository file and folder sizes. Supports GraphQL and REST api modes. Also mobile friendly.

    omar-azmi

    27 users

  • 修改网页文本工具（modify web tool）

    修改网页文本工具（modify web tool）

    < 中文 > 【恶搞】修改网页文本 < English > 【joke】Modifying web page text

    李栋梁

    27 users

  • zBReviewBoard

    zBReviewBoard

    Enables screenshots for zipBoard

    ZipBoard

    27 users

  • mh-devtools

    mh-devtools

    Inspect network requests like DevTools

    mohamed

    27 users