Web Development


Advanced Frame Designer

A tool to design frames directly in the web page. The integrated color picker supports also harmonic colors. Operating notes see the tooltips.

Rated 5 out of 5 stars (1)
2,352 users

Open With Photoshop No Restart

Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.

Rated 5 out of 5 stars (47)
23,094 users

Block Content (img,css,js,...)

Block download of any of the following:
Image, Script, Stylesheet, Font (@font-face), Audio/Video, IFrame, Object (like flash and java applets)

Rated 5 out of 5 stars (5)
2,286 users

Selenium IDE

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

Rated 5 out of 5 stars (1)
2,099 users

Dummy Lipsum

Generate "Lorem Ipsum" dummy text (from http://www.lipsum.com).

Rated 4 out of 5 stars (40)
11,905 users

Enable Screen Capturing in Firefox No Restart

Enable screen capturing support in Firefox.

Rated 5 out of 5 stars (1)
1,210 users

React Developer Tools No Restart

React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the React tab.

Not yet rated
1,504 users

iMacros for Firefox Featured

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

Rated 4 out of 5 stars (382)
436,229 users

Remove All Cookies No Restart

Remove all cookies easy and quickly from Tools Menu

Rated 5 out of 5 stars (1)
2,425 users

Custom User-Agent String No Restart

Set custom User-Agent string. Also available for Firefox on Android.

Rated 3 out of 5 stars (8)
20,884 users


this add-on simulates japanese mobile device.
this add-on support DoCoMo, Au(KDDI) and SoftBank device.

Rated 4 out of 5 stars (11)
51,326 users

Yandex Wordstat Assistant No Restart

Расширение, позволяющее значительно ускорить сбор слов с помощью сервиса подбора слова Яндекс (wordstat)

Rated 5 out of 5 stars (1)
2,147 users

Awesome Screenshot Plus - Capture, Annotate & More No Restart

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

Rated 4 out of 5 stars (1,099)
216,521 users

Easy Copy Paste

No more Ctrl+C / V. Fastest way to copy and paste. Copy with and without formatting! Quickly Tun On and OFF copy paste feature when you need it.

Rated 3 out of 5 stars (12)
3,972 users

Remote Control

Remote control the browser by executing any Javascript (e.g. forcing a page reload) from a TCP socket, e.g. from a script.

This allows you to refresh the browser from your IDE, or to automate tests.

Rated 5 out of 5 stars (5)
1,449 users


「はてなスクリーンショット拡張」とは、Firefox で表示している画面のスクリーンショット(サムネイル)を簡単に保存できる、Firefox ブラウザ専用のアドオン(拡張機能)です。スクリーンショットを保存する以外にも、はてなフォトライフにスクリーンショットをアップロードしたり、画面にメモを書いたりすることができます。

Rated 4 out of 5 stars (3)
4,175 users

Seamless Print No Restart

Enables silent/unattended/kiosk printing without showing the print dialog.
A simple click turns Seamless Print On or Off.
With Seamless Print turned On, print requests go directly to the printer using any Print options already setup.

Rated 4 out of 5 stars (6)
1,918 users

Graphing Calculator Toolbar

Enter up to 5 equations into this toolbar, then view the graphs using Firefox native SVG support. The toolbar allows rescaling the x and y coordinates and redefining the domain. Contributions go directly to the Boys & Girls Club.

Rated 4 out of 5 stars (10)
1,527 users


CryptoFox is an encryption/decryption tool for Mozilla Firefox, with dictionary attack support for cracking MD5 passwords.

Rated 3 out of 5 stars (5)
1,612 users

Textise No Restart

Creates a text-only version of almost any web page. Great for accessibility, SEO and printing.

Rated 3 out of 5 stars (19)
5,380 users