Petr-hlavni

by trapet

27 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,773 reviews

2,234,337 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 955 reviews

1,207,532 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 246 reviews

364,213 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Web Developer by chrispederick

Rated 5 out of 5 stars 213 reviews

531,980 users

The Web Developer extension adds various web developer tools to the browser.

Speed Dial by Josep del Rio

Rated 4 out of 5 stars 1,233 reviews

400,563 users

Direct access to your most visited websites

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,513 reviews

298,123 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

Webpage Screenshot in Firefox (♥♥♥♥♥) by susbox

Rated 5 out of 5 stars 430 reviews

252,891 users

FireShot Webpage Screenshots captures pages entirely. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

240,446 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 977 reviews

216,733 users

The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color and makes them easy to distinguish while beautifying the overall appearance of the interface. For Seamonkey & Flock. An essential. F...

PDF Download by Nitro PDF Software

Rated 2 out of 5 stars 680 reviews

119,962 users

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 332 reviews

143,068 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

ScrapBook by Gomita

Rated 4 out of 5 stars 843 reviews

158,984 users

Helps you to save Web pages and organize the collection.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 329 reviews

165,920 users

Adds zoom and rotation functionality for images...

YSlow by YSlow

Rated 3 out of 5 stars 192 reviews

101,903 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

Fast Video Download by Applian Technologies

Download Now

Experimental

Rated 3 out of 5 stars 282 reviews

67,502 users

Quickly and easily download video files from popular sites like YouTube, Dailymotion, Break.com, etc. For a more powerful free video recorder, install Freecorder at http://www.freecorder.com.
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