OptiSearch
Display ChatGPT, StackOverflow, Wikipedia, etc. answers alongside Google Search results !
143 users
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.
143 users
Math in Address Bar
Solve math equations in the address bar by typing 'math', then an empty space, then an equation like '(3^2 + 4^2)^(1/2)' and the answer will appear in the drop down menu.
143 users
Mobile Viewer
View websites through the lens of different mobile devices with this utility, allowing users to test and assess website layouts and responsiveness.
143 users
VS Code for the Web
Opens VS Code for the Web (vscode.dev) in Firefox. Select text and open the context menu to search with either GitHub Code Search or StackOverflow.
143 users
What is my IP address
What is my IP app helps you to recognize full network information in one click
142 users
HTML/CSS Extractor
Extract HTML & CSS from any element with live preview, smart selector simplification, and syntax-highlighted editor
142 users
A11Y - Color blindness empathy test
Empathy test for color blindness and visual impairment. This add-on emulates 8 types of color blindness, plus grayscale to check the contrast of your website. https://vinceumo.github.io/A11Y-Color-Blindness-Empathy-Test/
142 users
akamai-pragma-headers
Sets Akamai Pragma Request Headers on all requests for enhanced troubleshooting.
142 users
Discord Token Login / Multi Token management tool
The best token loginer with the most features 4.0update : Updated to support changes to the Discord quest page URL
141 users
Haloscan
Retrouvez en 1 clic les principales métriques d'Haloscan.com directement sur votre navigateur Firefox. Cette extension est gratuite, mais elle nécessite une connexion à un compte Haloscan.com pour récupérer les métriques.
140 users
Link Properties Plus WE
Provides extended link properties: size of linked file, last modified time, etc.
139 users
Excellent Data Filler
Fill Online Form and Scraper Data, Input, Checkbox, Select Fields, Click Button, Execute JS Script, Run Predefine Functions
139 users
RTL for AI Sites
Smart right-to-left for AI sites like Claude, ChatGPT, Gemini, Grok, DeepSeek, Perplexity, Copilot, Poe and Arena.
139 users
Absolute Right Click & Copy
Restore right-click, text selection, and copy functionality on blocked websites. Includes Standard and Absolute modes, plus per-site paste control.
138 users
Beautifer & Minify
This extension helps you quickly to minify and beautify CSS, HTML and JavaScript code! Make your website smaller and faster to load by minifying the JS, HTML and CSS code. HTML & CSS & JavaScript Beautifier/Minifier
138 users
Font Changer
Change any page font instantly with a simple click, choose from a list of over 800 different fonts and SAVE your settings for the website.
137 users
TokenBear
A simple way to copy Bearer tokens (and other Authorization header values). The extensions adds a new panel to the Developer tools, that shows all requests with the 'Authorization' header and the header value. Also a 'Copy' button for easy copying.
137 users
Reminder
This is a reminder add-on which reminds you about the things u specify ,provided some time.
136 users
postMessage-tracker-f
Monitors postMessage usage (url, domain and stack) both by logging using CORS and also visually as an extension-icon. All credit goes to Frans Rosén.
136 users
