Power User Pack

by IDenis

83 Add-ons in this Collection

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,513 reviews

299,072 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 300 reviews

242,725 users

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

Session Manager by Michael Kraft

Rated 4 out of 5 stars 555 reviews

267,074 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.

Webmail Ad Blocker by Jason

Rated 4 out of 5 stars 186 reviews

126,283 users

Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.

PDF Download by Nitro PDF Software

Rated 2 out of 5 stars 680 reviews

120,491 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

144,051 users

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

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,384 reviews

210,962 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

UnMHT by arai_a

Rated 5 out of 5 stars 213 reviews

79,883 users

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Reload Plus by bwProductions

Rated 5 out of 5 stars 72 reviews

13,294 users

Supercharge your reload button and hotkeys!

Tree Style Tab by Piro (piro_or)

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Experimental

Rated 4 out of 5 stars 1,171 reviews

96,886 users

Show tabs like a tree.

Fast Dial by telega

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Experimental

Rated 3 out of 5 stars 2,450 reviews

141,471 users

Visual bookmarks for Firefox. (Works with all latest versions of Firefox)

Image Zoom by Jason Adams

Rated 4 out of 5 stars 329 reviews

166,275 users

Adds zoom and rotation functionality for images...

FEBE by Chuck_Baker

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 97 reviews

67,002 users

Wappalyzer is a browser extension that identifies software on websites.

Html Validator by Marc Gueury

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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