Power User Pack

by IDenis

83 Add-ons in this Collection

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,514 reviews

298,906 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 302 reviews

268,738 users

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

Session Manager by Michael Kraft

Rated 4 out of 5 stars 562 reviews

269,193 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 187 reviews

126,315 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 682 reviews

119,316 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.

Tree Style Tab by Piro (piro_or)

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Experimental

Rated 4 out of 5 stars 1,192 reviews

98,790 users

Show tabs like a tree.

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,389 reviews

207,747 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.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 333 reviews

142,906 users

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

UnMHT by arai_a

Rated 5 out of 5 stars 217 reviews

77,487 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.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 330 reviews

164,907 users

Adds zoom and rotation functionality for images...

FEBE by Chuck_Baker

Rated 4 out of 5 stars 638 reviews

124,326 users

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.

Reload Plus by bwProductions

Rated 5 out of 5 stars 72 reviews

14,298 users

Supercharge your reload button and hotkeys!

Fast Dial by telega

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Experimental

Rated 3 out of 5 stars 2,452 reviews

139,625 users

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

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 98 reviews

66,317 users

Wappalyzer is a browser extension that identifies software on websites.

Html Validator by Marc Gueury

Rated 5 out of 5 stars 198 reviews

55,833 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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