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9,361 extensions found in Web Development

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  • Free Backlink Checker by LRT

    Free Backlink Checker by LRT

    Free backlink checker to verify all links on a page. Finds broken, unverified, no-follow, follow, internal, external links.

    LinkResearchTools GmbH

    243 users

  • Detector Whats Font

    Detector Whats Font

    You can find out the font of a web page very easily.

    macha

    243 users

  • Switch Direction

    Switch Direction

    Switch Direction in edits, useful for mixed RTL and LTR texts editing.

    ebraminio

    242 users

  • Website Technology Detector

    Website Technology Detector

    Detects technologies used in websites

    Sumalya Chatterjee

    240 users

  • Rentgen

    Rentgen

    Rentgen to wtyczka, która automatycznie wizualizuje, jakie dane zostały ~~wykradzione~~ wysłane do podmiotów trzecich przez odwiedzane strony. Pozwala wygenerować raport lub treść maila, który można wysłać do administratora strony i/lub UODO.

    “Internet. Time to act!” Foundation

    239 users

  • all-in-one

    all-in-one

    Facility for providing suite of tools for handling web components e.g. standard formats HTML, RSS, M3U8, and more.

    Firefox user 15314155

    239 users

  • Skip Ads

    Skip Ads

    Skip all annoying ads

    I Am Your Fear

    238 users

  • SnapOSINT

    SnapOSINT

    A snappy OSINT (open-source intelligence) searching tool that turns your search bar into a dedicated OSINT engine. This add-on is designed to save you time during your osint investigation.

    m4ny0p

    238 users

  • HackBar For Quantum

    HackBar For Quantum

    HackBar Quantum is a sidebar that helps you with web application security testing. This add-on is a predecessor to the original HackBar that is not compatible with Firefox Quantum. This is still in beta phase, lots of things are yet to come :) .

    r4#51(codeblooded)

    237 users

  • New Hackbar

    New Hackbar

    A sitebar that helps pentesters to perform manual web security testing inside their browser. This addon is written in webextension and alternatives to the XUL version of original Hackbar.

    mxcx

    237 users

  • Viewport

    Viewport

    Displays the current viewport size when resizing the browser window.

    Kameron

    236 users

  • JS Injector

    JS Injector

    Inject JavaScript custom code into every webpage (e.g. to help with debugging).

    Francesco De Stefano

    236 users

  • HTML5 Universal Speed Hack

    HTML5 Universal Speed Hack

    Speed up or slow down HTML5 and Unity games directly in the browser. Control functions like setTimeout, setInterval, Date.now, and more to precisely adjust game speed.

    Rafael Lima

    235 users

  • Passwork Auto Logon

    Passwork Auto Logon

    Use your Passwork accounts to auto signin on web sites in one click.

    Passwork

    234 users

  • Markdown Diagrams

    Markdown Diagrams

    Renders diagrams and charts code blocks into preview images. Supports many languages: PlantUML, Mermaid, C4, GraphViz, Erd, Nomnoml, BPMN, *Diag, Bytefield, Ditaa, Svgbob, UMlet, Vega, Vega-Lite, WaveDrom.

    Modulo srl

    233 users

  • User Agent

    User Agent

    Switch browser User Agent to simulate different devices and browsers

    Muzikasi

    232 users

  • MDN Search

    MDN Search

    To use, type 'mdn' plus your search term into the url bar. Works for JavaScript and CSS reference articles.

    Bryan Clark

    232 users

  • JavaScript Switch

    JavaScript Switch

    ページ読み込み時の JavaScript の有効無効を切り替えるプラグイン.

    Novs Yama

    232 users

  • URL Increment Button

    URL Increment Button

    A 1-Click URL Increment Button for your toolbar. Works with or without URL Incrementer.

    Sixcious

    230 users

  • Polypane helper

    Polypane helper

    Open the current page in Polypane using the button in your task bar, or right click any link to open that URL in Polypane. Polypane, the browser for responsive web development and design

    Firstversionist

    229 users

  • Eval Villain

    Eval Villain

    Hook native JavaScript functions before page load to see how a website uses them. Narrow down output based on the appearance of URL and session artifacts, user configured strings/regex, blacklists and more.

    bemodtwz

    228 users

  • Angular state inspector

    Angular state inspector

    Helps you to debug Angular component state. Supports Angular 1/2+/Ivy/hybrid!

    Anton Lunev

    228 users

  • The Hell is Connections Roblox

    The Hell is Connections Roblox

    Replaces 'Connections' with 'Friends' on any Roblox page

    thebonkeybruh

    228 users

  • WeCompress File Compressor

    WeCompress File Compressor

    Compress PDF, PPT, Word, Excel, PNG & JPEG files free online. No file limits, no registration & no watermarks; just smaller, easy to share, high-quality files.

    Firefox user 13828002

    228 users

  • SEO Website Scanner: Meta, Headings, etc.

    SEO Website Scanner: Meta, Headings, etc.

    Scans a page for basic SEO meta information and headings.

    SEO Website Scanner

    227 users