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

Log in

9,150 extensions found in Web Development

Filter results
Search results
  • Console Recorder for AWS

    Console Recorder for AWS

    Records actions made in the AWS Management Console and outputs the equivalent CLI/SDK commands and CloudFormation/Terraform templates.

    Ian Mckay

    163 users

  • Meteor DevTools Evolved

    Meteor DevTools Evolved

    The Meteor framework development tool belt, evolved.

    Leonardo Venturini

    163 users

  • CSS and XPath checker

    CSS and XPath checker

    A helper tool for to confirm CSS and XPath selector.

    TANIGUCHI Takaki

    161 users

  • showModalDialog Shim

    showModalDialog Shim

    showModalDialog shim rewrites deprecated showModalDialog() to window.open() function so it works in newer browsers! Useful for legacy enterprise web applications Ported from chrome version at https://github.com/chuckhendo/showModalDialog-shim

    Michael

    161 users

  • MultiPass

    MultiPass

    This extension automatically send credentials for HTTP-Authentication based on a list of passwords associated to a regular expression.

    Gilles Crettenand

    161 users

  • JS Injector

    JS Injector

    Automate testing and auto-populate forms by injecting javascript code into the page. If [Run in isolation] is checked, the injected script will not contaminate the original code.

    Joey

    160 users

  • 网站 IP 信息查询

    网站 IP 信息查询

    查询当前访问网站的 IP 地址的地理位置，国旗，所属 ASN，端口开放信息等信息。

    北京天特信科技有限公司

    160 users

  • Website Downloader - Source Code Copier

    Website Downloader - Source Code Copier

    Download websites source code and assets

    Rexomer

    160 users

  • Bluesky - Cleanup Usernames

    Bluesky - Cleanup Usernames

    cleans all usernames of their extention on Bluesky

    Greendata

    159 users

  • Block Sign In With Google

    Block Sign In With Google

    Blocks the sign in with google popup

    zaporter

    159 users

  • Quantum Hackbar

    Quantum Hackbar

    Hackbar port for the new WebExtensions API. It's redesigned and optimized to work with the new Firefox Quantum. It sits in your DevTools - Click F12 to open it. Any suggestions and/or issues are welcome :)

    StyleShit

    158 users

  • Cookie Lympha

    Cookie Lympha

    A basic add-on. Gets rid of a current site's cookies. Repository: https://github.com/MARNUTUX/lympha-cookies

    Minor Arrieta Rojas

    158 users

  • Close Similar Tabs

    Close Similar Tabs

    Close similar tabs with this lightweight and simple extension.

    SY-dev

    158 users

  • Copy image as Base64

    Copy image as Base64

    Allows you to copy an image to clipboard in a Base64 format data URI

    Syd Lambert

    158 users

  • Monochromer

    Monochromer

    This extension makes web site monochrome.

    xia_sava

    158 users

  • WonderSwitcher

    WonderSwitcher

    The WonderProxy Switcher allows you to switch between HTTP proxy servers quickly and easily to speed up your website testing. Import proxies from your WonderProxy account or add your own custom servers.

    WonderProxy

    158 users

  • Xdebug Session Cookie

    Xdebug Session Cookie

    This addon is for PHP developers that use tools with XDEBUG support.

    Kudlaty

    157 users

  • HTTP Header Mangler

    HTTP Header Mangler

    HTTP Header Mangler inserts HTTP headers on a per host basis.

    Peter Nilsson

    157 users

  • Sound Meter (Noise & Decibel)

    Sound Meter (Noise & Decibel)

    Measure the surrounding sound (dB) and noise with your computer's microphone!

    Loori

    156 users

  • Live HTTP headers

    Live HTTP headers

    Displays the live log with the http requests headers

    ircestudios

    156 users

  • S3BucketList

    S3BucketList

    S3BucketList automatically scans network requests made by your browser to detect Amazon S3 bucket URLs

    Alec Blance

    156 users

  • Speed Test Internet

    Speed Test Internet

    Check internet download/upload speed

    Firefox addon Free

    156 users

  • MailFail

    MailFail

    MailFail identifies and provides commands to exploit a large number of email-related misconfigurations for the current domain and subdomain. The extension's UI popup highlights any misconfigurations in red and links to supporting documentation.

    Hacks and Hops

    155 users

  • Word to PDF - Convert and Merge

    Word to PDF - Convert and Merge

    Convert MS Word documents (doc and docx) into PDF format

    emano waldeck

    154 users

  • Last Tab

    Last Tab

    Allows you to switch to the last or most recent tab, Press Alt + Z You can also change the keyboard shortcut following this link https://support.mozilla.org/en-US/kb/manage-extension-shortcuts-firefox

    Mehedi Hasan

    154 users