by plutonium186

15 Add-ons in this Collection

NoScript Security Suite by Giorgio Maone

Rated 4 out of 5 stars 2,576 reviews

1,488,697 users

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks, "Spectre", "Meltdown" and other JavaScript exploits.

Xmarks Sync by Xmarks Inc.

Rated 3 out of 5 stars 3,209 reviews

96,964 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!

Tamper Data by Adam Judson

Rated 4 out of 5 stars 296 reviews

48,968 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 288 reviews

112,015 users

Manage any SQLite database on your computer.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 315 reviews

158,759 users

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

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 209 reviews

73,113 users

View HTTP headers of a page and while browsing.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 211 reviews

31,681 users

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Firefox 56, use 0.974 (see all versions below).
For Firefox 57, see Web Extensions.

Pearl Crescent Page Saver classic screenshot tool by Kathleen Brade, Mark Smith

Rated 4 out of 5 stars 99 reviews

48,055 users

*** Note: Please use Page Saver WE in Firefox 57 and newer. ***

Save an image of a web page interactively or from the command line. Options allow you to control the output format (PNG or JPEG), file name, and much more.

Secure Login by Sebastian Tschan, Sarah Av.

Rated 4 out of 5 stars 375 reviews

21,133 users

Secure Login is an extension for Firefox integrated password manager.

WebExtension alternative:

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 78 reviews

59,652 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

AutoPager by Wind Li

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Rated 4 out of 5 stars 393 reviews

12,167 users

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

Better Gmail 2 by Gina Trapani

Rated 4 out of 5 stars 515 reviews

3,786 users

Add useful extra features to Gmail, like hierarchical labels, an unread message icon on your browser tab, file attachment icons, and more.

Personal Menu (Personal Firefox Button) by Merci chao

Bring back your personal and powerful Firefox Button!

Ubiquity by matyr

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Rated 5 out of 5 stars 118 reviews

480 users

An extension that allows for the use of dynamic commands in Firefox.

Make Link by Rory Parle

Rated 4 out of 5 stars 30 reviews

3,295 users

Easily make HTML, ForumCode, and other links from the context menu.

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