Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
15,878 人のユーザー
Поиск Яндекс
Добавляет Яндекс к поисковым движкам.
15,716 人のユーザー
SeoQuake SEO extension
Accelerate your SEO efforts on the fly. SEOquake is a free plugin for browsers that provides you with key SEO metrics for a specific page, along with other useful tools such as SEO Audit and many others.
15,251 人のユーザー
テキストリンク (Text Link)
Webページに書かれたURI文字列を、ダブルクリックするだけで読み込めるようにします。
14,254 人のユーザー
My IP Hider VPN
My IP Hider VPN is number one tool for hiding your IP and unblocking any web site! If your Firefox version is less then 55 please install older My IP Hider VPN from "Version History" (https://goo.gl/7ZQQjZ)
14,004 人のユーザー
RESTED
A REST client for the rest of us
13,828 人のユーザー
Export Cookies
Export cookies to a Netscape format cookies.txt file.
13,463 人のユーザー
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
13,376 人のユーザー
Lightning Autofill
The most popular autofill extension, boosting productivity since 2010.
13,294 人のユーザー
javascript
add javascript that will run on this domain. back up your scripts in the options area (shortcut there by clicking the "JS" letters in the bottom right)
12,674 人のユーザー
Fake Filler
A form filler that fills all form inputs (textboxes, textareas, radio buttons, dropdowns, etc.) with fake and randomly generated data. The purpose of this extension is to help developers and testers test forms quickly and easily.
12,321 人のユーザー
モバイルシミュレーター
モバイルサイトのテストに使用できるいくつかのモデルを備えた、コンピューター上の非常にリアルなスマートフォンシミュレーター。
12,130 人のユーザー
Flag Cookies
A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.
11,902 人のユーザー
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
11,336 人のユーザー
Empty Cache Button
Cache clearing made easy. One click.
10,963 人のユーザー
Fonts Ninja
Speed up your design workflow!
10,928 人のユーザー
IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
10,781 人のユーザー
Modify Header Value
Add, modify or remove a header for any request on desired domains.
10,731 人のユーザー
RESTer
A REST client for almost any web service.
10,490 人のユーザー
Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
10,451 人のユーザー
Save Screenshot
Saves the current page as image file or copies it to clipboard.
9,955 人のユーザー
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
9,814 人のユーザー
Angular DevTools
Angular DevTools extends Firefox DevTools adding Angular specific debugging and profiling capabilities.
9,794 人のユーザー
axe DevTools® - Web Accessibility Testing
Add accessibility auditing to the Firefox Developer Tools
9,783 人のユーザー
Imageye - Image downloader
Find and download all images on a web page.
9,510 人のユーザー