10,350 extensions found in Web Development

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Image ALT
Check all image elements have an ALT attribute either empty for decoration or a accessible name.
Rated 4 out of 5
Deafinitive
144 users
Gemini Delete for Firefox
Gemini Delete Chat Extension for Firefox
Rated 2.3 out of 5
donk
144 users
HTTP Header Mangler
HTTP Header Mangler inserts HTTP headers on a per host basis.
Rated 4.2 out of 5
Peter Nilsson
143 users
Adjust Viewport Size
Resize window adjusts to viewport. ブラウザの表示部分に合わせてウインドウの大きさを変更できます。
Rated 4.9 out of 5
FullStackChoreman
143 users
ChatHub - All-in-one chatbot client Free
Use ChatGPT, Bing, Bard, Claude and more chatbots simultaneously
Rated 2.3 out of 5
Ruslan A
143 users
Scratch 3 Developer Tools
Scratch 3 Developer Tools to enhance your Scratch Editing Experience on https://scratch.mit.edu
Rated 4.5 out of 5
griffpatch
142 users
Hotwire Dev Tools
Hotwire Dev Tools for Turbo and Stimulus
Rated 5 out of 5
Leon Vogt
142 users
YouTube Ad Blocker
Blocks ads on YouTube.
Rated 1 out of 5
thenewmsy
142 users
CMS Backend Opener
Opens a new tab/window with backend-login of the CMS, which the current website is using. Just press [Alt] + [y]. Supported CMS's: Typo3, Joomla, WordPress, Drupal, Contao, WebsiteBaker, Weblication, CMSQLite and Oxid.
Rated 5 out of 5
Andy R.
142 users
Fast Auto Clicker
Automatically clicks the active web page at regular intervals.
Rated 1 out of 5
thedoctor
141 users
MJsonViewer
Yet, just another json content viewer plugin for Firefox. Before using, you should go to the "about:config" page and toggle the "devtools.jsonview.enabled" to false first.
Rated 4.5 out of 5
D0n9X1n
141 users
Download Reddit™ Videos
RedditVideodl.com allows you to download Reddit videos with Sound in HD Formats.
Rated 2.7 out of 5
redditvideodl.com
141 users
Open in Chromium Browser
Open current page, link, or all tabs in the Chromium browser.
Rated 3.4 out of 5
Andy Portmen
140 users
Myanimelist Redesign 2
A redesigned user interface for Myanimelist with multiple themes and layout improvements (official new version)
Rated 4.2 out of 5
Project Redesign
140 users
Sound Meter (Noise & Decibel)
Measure the surrounding sound (dB) and noise with your computer's microphone!
Rated 4 out of 5
Loori
140 users
Website Colors Finder
Get all the colors used on a website
There are no ratings yet
Golap Hazarika
140 users
Urql Devtools
Easy GraphQL in the browser with Urql
Rated 5 out of 5
Urql Devtools (Formidable)
140 users
Meteor DevTools Evolved
The Meteor framework development tool belt, evolved.
Rated 5 out of 5
Leonardo Venturini
140 users
DNSinfo.xyz IP/Domain Information
A web extension for viewing the IP address, reverse DNS, Geolocation, ASN and DNSSEC status of the currently active tab.
Rated 4.8 out of 5
Justus-D
140 users
Xdebug Session Cookie
This addon is for PHP developers that use tools with XDEBUG support.
Rated 3.1 out of 5
Kudlaty
139 users
Clear Cache & Reload
One-click button to clear site cache and reload the page.
Rated 4.3 out of 5
MM
139 users
Disable CSP and CORS
Disables CSP and CORS for every website.
Rated 3.3 out of 5
nas927
139 users
IP to Country Flag & My IP- WhatIsMyIP.click
IP to Country Flag - WhatIsMyIP.click Display the IP and Country information of the currently viewed website and also display your external IP address.
Rated 3 out of 5
Eria IO
139 users
Mail Tracker Pro
Advanced email tracking extension for Gmail. Track when your emails are opened and get real-time notifications.
There are no ratings yet
Himanshu Sharma
139 users
Referrer Switch
Adds a button to the toolbar to enable / spoof / disable sending referer header.
Rated 4.4 out of 5
Nobuyuki Honda
139 users