Petr-hlavni

by trapet

27 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,837 reviews

2,181,138 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 998 reviews

1,232,311 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 263 reviews

333,021 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 235 reviews

477,663 users

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

Full Web Page Screenshots (♥♥♥♥♥) by susbox

FireShot makes full web page screenshots. 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

Speed Dial by Josep del Rio

Rated 4 out of 5 stars 1,274 reviews

351,930 users

Direct access to your most visited websites

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,559 reviews

313,831 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!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 309 reviews

268,203 users

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

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 1,005 reviews

233,338 users

The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 354 reviews

143,144 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 872 reviews

146,288 users

Helps you to save Web pages and organize the collection.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 340 reviews

143,583 users

Adds zoom and rotation functionality for images...

YSlow by YSlow

Rated 3 out of 5 stars 217 reviews

81,892 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.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 215 reviews

52,145 users

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962
http://users.skynet.be/mgueury/mozilla

Fast Video Download by Applian Technologies

Download Now

Experimental

Rated 3 out of 5 stars 283 reviews

47,042 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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