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

Log in

10,922 extensions found in Web Development

Filter results
Search results
  • CONTENS CMS Connector

    CONTENS CMS Connector

    Link to page in Contens CMS backend

    CONTENS

    14 users

  • Beagle Security Web Assessment

    Beagle Security Web Assessment

    Find surface level vulnerabilities in your web applications. Run a free website security assessment and gain a preliminary understanding of your application’s security posture.

    Beagle Security

    14 users

  • SN Launcher - ServiceNow utility tool

    SN Launcher - ServiceNow utility tool

    ServiceNow utility tool, search and navigate all menu items, documentation, components, switch application scope with a command palette.(personal project, not affiliated to ServiceNow)

    Cheng Wu

    14 users

  • Edit Page Text

    Edit Page Text

    Edit texts in web pages easily

    Burak Unver

    14 users

  • MDN Search 2026: Web & Extension Developers' Bible

    MDN Search 2026: Web & Extension Developers' Bible

    Set MDN as your default engine for instant access to 11,000+ verified web docs. Use AI Help for real-time coding solutions and technical preservation through 2026. The world’s most trusted library for HTML, CSS, and JS—search like a pro today!

    Handmade Internet Treasures

    14 users

  • Copy Title And Url

    Copy Title And Url

    アクティブなタブのタイトルとURLをmarkdown、pukiwiki、html形式でクリップボードにコピーします。

    ooyama2002

    14 users

  • PDF Merge by PDFly

    PDF Merge by PDFly

    Merge PDF Files for free.

    Wuxxu

    14 users

  • GitHub Contribution Color Graph

    GitHub Contribution Color Graph

    Change colors of contribution graph in GitHub.

    William Belle

    13 users

  • GitHub File Diff

    GitHub File Diff

    View diffs of files and directories on GitHub.

    mohd-akram

    13 users

  • Screen Recorder

    Screen Recorder

    Record your screen and save it as a video file.

    Screen Recorder

    13 users

  • UserAgent Switch

    UserAgent Switch

    Switch browser User-Agent to simulate different devices and browsers in a million-level database

    Amorichy

    13 users

  • MarkSnip - Markdown Web Clipper

    MarkSnip - Markdown Web Clipper

    A web clipper to download articles in markdown format. Turndown & Readability are used as core libraries.

    Dhruv

  • Voe M3U8 Catcher

    Voe M3U8 Catcher

    Captures M3U8 URLs

    René

    13 users

  • DataLayer Lens

    DataLayer Lens

    A powerful, beautiful tool for monitoring GTM dataLayer events in real-time

    SizzleBits

    13 users

  • NYC Idling Complaint Knowledge

    NYC Idling Complaint Knowledge

    NYC Idling Complaints Knowledge (NICK) - to export user's list of submitted complaints from the NYC Idling Complaints portal.

    cleanfutureapps

    13 users

  • LeetBoost: AutoCompleteLeetCode

    LeetBoost: AutoCompleteLeetCode

    Provides context-unaware intellisense for LeetCode code editor. Allows users to make custom code snippets.

    fillabusta420

    13 users

  • Claude Track & Export

    Claude Track & Export

    Track Claude usage, export conversations to Markdown, and jump into new chats instantly.

    Jedd

    13 users

  • Pic Style - Checkerboard

    Pic Style - Checkerboard

    Add a checkerboard background on Firefox view image pages to help show image transparency.

    coyoteelabs

    13 users

  • 轻速云考试辅助

    轻速云考试辅助

    启用后，在轻速云进行考试将不受所谓 “反作弊” 的限制，您可以自由切换网页或者打开其他程序。

    秋小十

    13 users

  • Clark College Web Development

    Clark College Web Development

    Useful links and resources for Clark College Web Development Students

    Bruce Elgort (Clark College)

    13 users

  • Seo Magic - информер тиц, индексации страниц

    Seo Magic - информер тиц, индексации страниц

    Расширение показывает количество проиндексированных страниц в Яндекс и Google, Тиц, АГС, проверка индексации страницы

    Maxim Arnautov

    13 users

  • SEO Analysis & Audit: WebCheck360 Insights

    SEO Analysis & Audit: WebCheck360 Insights

    Analyze 160+ SEO signals instantly! Professional website audit with Schema markup, Link optimization & Security checks. Free.

    Stephen

    13 users

  • VibeMate

    VibeMate

    Swiss Army Knife for Data Analysts: Persistent Automation, HTTP Tools, Network Logger, Proxy Manager.

    The Principal

    13 users

  • OSINT Search

    OSINT Search

    Поиск сразу везде с Google Dorks

    OSINT-SAN Project

    13 users

  • TabMixer

    TabMixer

    Professional tab volume control extension - manage each tab's audio level independently with a sleek mixer interface for Firefox.

    Emre Eren

    13 users