Nikavera's collection

by Veronika Borodina

9 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,258 reviews

505,105 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 1,228 reviews

853,202 users

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

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,615 reviews

173,169 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!

Web Developer by chrispederick

Rated 5 out of 5 stars 284 reviews

287,626 users

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

Session Manager by Michael Kraft

Rated 4 out of 5 stars 519 reviews

236,651 users

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 207 reviews

29,953 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

Until Firefox 56, use 0.974 (other versions)
For Firefox 57, see Web Extensions below

PDF Download by Nitro PDF Software

Download Now

Experimental

Rated 2 out of 5 stars 663 reviews

25,712 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.

Fast Video Download by Applian Technologies

Download Now

Experimental

Rated 3 out of 5 stars 279 reviews

24,412 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.

LiveJournal Addons by vmb, mudasobwa

Rated 4 out of 5 stars 37 reviews

441 users

Add some facilities to work with LiveJournal.

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections