Modify Header Value
Add, modify or remove a header for any request on desired domains.
10.217 usuários
HackBar
A HackBar for new firefox (Firefox Quantum). This addon is written in webextension and alternatives to the XUL version of original Hackbar. Press F12 to use HackBar
9.915 usuários
Emoji Keyboard - Emojis For Firefox
A free extension of the web tool https://coolsymbol.com/emojis/emoji-for-copy-and-paste.html. It helps input emoji in the web browser with an extensive search functionality.
9.659 usuários
Html Validator
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon For Firefox 56, use 0.974 (see all versions below). For Firefox 57, see Web Extensions.
9.422 usuários
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
9.322 usuários
EditThisCookie
EditThisCookie é um gerenciador de cookies. Você pode adicionar, excluir, editar, procurar, proteger e bloquear cookies!
9.265 usuários
Simulateur mobile
Simulateur de smartphone sur ordinateur très réaliste avec plusieurs modèles disponibles pour tester son site mobile.
8.808 usuários
BuiltWith
BuiltWith is a web site profiler tool. Upon looking up a page, BuiltWith returns a list all the technologies in use on that page that it can find.
8.747 usuários
daily.dev | The homepage developers deserve
Get one personalized feed for all the knowledge you need as a developer.
8.668 usuários
Refined GitHub
Simplifies the GitHub interface and adds many useful features.
8.651 usuários
Ignore X-Frame-Options Header
Allows all sites to be loaded in iframes, despite X-Frame-Options header settings.
8.649 usuários
axe DevTools® - Web Accessibility Testing
Add accessibility auditing to the Firefox Developer Tools
8.454 usuários
Page Saver WE screenshot capture tool
Quickly and easily capture an image of a web page. Options allow you to control output format (PNG or JPEG), file name and more.
8.272 usuários
ruler
Simple tool for measuring arbitrary parts of a page. Does not and will never contain adware.
8.069 usuários
Purple Ads Blocker
Purple AdBlock is a adblock for Twitch.tv
8.039 usuários
Apollo Client Devtools
GraphQL debugging tools for Apollo Client.
7.905 usuários
Form History Control
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller. Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
7.883 usuários
Export Cookies
Export cookies to a Netscape format cookies.txt file.
7.719 usuários
JetBrains Toolbox Extension
Clone and open projects from GitHub, GitLab, and Bitbucket in JetBrains IDEs right from your browser
7.652 usuários
All Downloader Professional
All Downloader Professional finds links, images, videos, documents on a website an make them downloadable.
7.597 usuários
Save Screenshot
Saves the current page as image file or copies it to clipboard.
7.427 usuários
WebScrapBook
Capture web pages to local device or backend server for future retrieval, organization, annotation, and edit.
7.263 usuários
JavaScript Switcher
A lightweight addon that adds a Toggle button in URL bar, for toggling JavaScript (on or off) individually per domain, and stores that for future visit. Works also with Firefox 57+.
7.101 usuários
Cookie Remover
Removes cookies for the current site
7.066 usuários
EditThisCookie2
EditThisCookie é um gerenciador de cookies. Você pode adicionar, excluir, editar, procurar, proteger e bloquear cookies!
6.978 usuários