Canonical
Allows you to quickly navigate to or copy the canonical version of the URL you're on, if available.
216 utents
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 :) .
215 utents
Interceptor
Run web clients without backends by mocking HTTP requests
214 utents
Webpage to Excel and PDF
convert webpages to Excel and PDF formats
214 utents
Edit
Format Text, Replace, Insert HTML, BBCode, Markdown & Custom Texts
214 utents
GitIngest - Turn any Git repo to LLM prompt
Turn any Git repository into a prompt-friendly text ingest for LLMs. By replacing hub with ingest to access a coresponding digest.
213 utents
Javascript Control
Add a button in the url bar to block or enable javascript per-site. Default is javascript disabled.
213 utents
Textern
Edit text in your favourite external editor!
213 utents
KOSHIAN メール欄を表示
メール欄を表示します
212 utents
HTTP Indicator
Indicator for HTTP/2, QUIC and HTTP/3
210 utents
GitHub + Mermaid
A browser extension for Chrome, Opera & Firefox that adds Mermaid language support to GitHub.
210 utents
The Tab Suspender
Suspends inactive tabs after a set time by replacing them with a custom suspended page.
209 utents
Dom Tree and CSS Playground
On ANY web site, easily find/edit the web elements and styles that you need, in real time. Use css playground to micro-view 100's of styles in seconds. NOTE: Use your shortcut key "f" allot.
208 utents
URL Encoder Decoder
URL Encoder Decoder
208 utents
SEO Website Scanner: Meta, Headings, etc.
Scans a page for basic SEO meta information and headings.
208 utents
Histogram Viewer
Generates the histogram of a selected image.
207 utents
IE NetRenderer button
Displays a snapshot of the current page as viewed in various Internet Explorer versions, provided by IE NetRenderer webservice.
207 utents
SuperDog Authentication Extension
Send a message to a native application for authentication.
206 utents
EXIFdata Viewer
EXIFdata Viewer is a powerful browser extension that allows you to view and analyze the metadata of images, including EXIF, IPTC, and XMP data. With this extension, you can uncover the hidden details of your images.
205 utents
Form Hack
Show hidden inputs in HTML pages with this simple addon. The addon was created for testing purposes. In the newer version the name or the id of the hidden input is displayed.
204 utents
phab-test-policy
Adds Testing Policy UI to Mozilla's Phabricator instance
204 utents
URL Params Editor
This is a tool for web developers. It makes editing URL parameters for long URLs much easier. You can use this tool to view each URL param, add new or delete existing ones.
203 utents
xStyle
Restyle the web with xStyle, a user styles manager. With xStyle you can install themes & skins for many sites and create your own.
203 utents
Plain Text Linker
Opens plain text URLs when you double-click on them.
202 utents
Fullscreen anything
Let user select element to maximize
202 utents