Power User Pack

by IDenis

81 Add-ons in this Collection

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,580 reviews

302,755 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 312 reviews

248,679 users

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

Session Manager by Michael Kraft

Rated 4 out of 5 stars 486 reviews

282,931 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.

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,547 reviews

172,628 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 358 reviews

131,173 users

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

Tree Style Tab by Piro (piro_or)

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Rated 4 out of 5 stars 1,373 reviews

107,551 users

Show tabs like a tree.

Fast Dial by telega

Rated 3 out of 5 stars 2,545 reviews

112,703 users

Visual bookmarks for Firefox.

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 103 reviews

77,232 users

Wappalyzer is a browser extension that identifies software on websites.

Webmail Ad Blocker by Jason

Rated 4 out of 5 stars 206 reviews

100,547 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.

UnMHT by arai_a

Rated 4 out of 5 stars 229 reviews

91,866 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.

FEBE by Chuck_Baker

Rated 4 out of 5 stars 664 reviews

106,706 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.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 346 reviews

139,280 users

Adds zoom and rotation functionality for images...

Html Validator by Marc Gueury

Rated 4 out of 5 stars 216 reviews

50,015 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

SmoothWheel by Avi Halachmi

Rated 5 out of 5 stars 267 reviews

35,155 users

Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).

PDF Download by Nitro PDF Software

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Rated 2 out of 5 stars 688 reviews

74,507 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.
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