Petr-hlavni

by trapet

27 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,063 reviews

1,441,601 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 1,015 reviews

997,143 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 276 reviews

255,398 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 258 reviews

333,417 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 1,215 reviews

275,586 users

Direct access to your most visited websites

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,485 reviews

233,418 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 4 out of 5 stars 371 reviews

182,128 users

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

ScrapBook by Gomita

Rated 4 out of 5 stars 768 reviews

118,516 users

Helps you to save Web pages and organize the collection.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 362 reviews

96,474 users

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

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 959 reviews

175,865 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.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 347 reviews

111,513 users

Adds zoom and rotation functionality for images...

YSlow by YSlow

Rated 3 out of 5 stars 221 reviews

50,410 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.

PDF Download by Nitro PDF Software

Download Now

Experimental

Rated 2 out of 5 stars 690 reviews

48,729 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.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 218 reviews

36,988 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
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