Mozilla Firefox Plugins, Add-ons and extension Page 40 of 81

Easily convert web pages to a PDF using this web-based online tool. You can use it as an online-service or as a Firefox add-on. Unfortunately you can only store whole web pages as a PDF-file, not only selected parts of a web page.

Open multiple URLs at the same time in one click! Do you check every day a few specific sites? And you're getting tired of opening them one-by-one? Start being lazy by using this add-on!

A REST client for almost any web service (Firefox and Chrome extension).

Content Farm Terminator is a cross-platform browser extension that helps the user identify and repel content farms. It has the following features:

Acorny helps readers capture web highlights, import highlights from other tools, and turn saved passages into recall cards for spaced repetition review.

MeasureFloorPlan.com is a web-based, purpose-built tool designed to measure and calculate ANSI-compliant Gross Living Area (GLA) from existing floor plans, blueprints, or sketches.

Quickly detect who is hosting any site on the web. Enter a url then click "Detect Hosting Provider" and we'll show you the associated host/ISP name and IP addresses.

HttpWatch is an HTTP viewer and debugger that integrates with IE and Firefox to provide seamless HTTP and HTTPS monitoring without leaving the browser window. It's available as a free edition and a PRO version that cost money and has additional features.

Context Search is a Firefox extension that expands the context menu's 'Search for' item into a list of installed search engines, allowing you to choose a specific search engine every time.

Your free Webtop document harvester. With OutWit Docs you will find text documents, datasheets, PDF files, presentations from multiple online sources

OutWit Images: Your sleek, easy-to-use online image browser.

With OutWit Images, you can automatically explore Web pages or search engine results for pictures and easily create, save, and share your collections or view them as full-screen slideshows.

Fully standalone tag cloud builder, realized as Firefox sidebar add-on, which also allows user to navigate and highlight each tag on your page. This add-on runs anywhere, where Firefox runs. Sometimes, especially on big peaces of web page text, it is very useful to analyze page...

The quickest and convenient way to copy, visualize, edit and export CSS.

Farewell to "Inspect Element/ Browser Dev Tools" — View the CSS of any element you hover, immediately, and copy, export to codepen all its rules with a click.

FREE browser extension. Blocks harmful sites, protects your privacy and finds deals while you shop.

B.S. Detector is a browser extension that warns users about unreliable news sources. It basically searches all links on a given webpage for references to unreliable sources, checking against a manually compiled list of domains.

YouTube Center is a userscript designed to expand the functionality of YouTube. It includes the ability to download the video you're watching, auto selecting your preferred video quality and much more.

Convert Case is a free online text transformation tool designed to make changing the capitalization of your text quick and effortless. Whether you need to convert text to UPPERCASE, lowercase, Title Case, Sentence case, or other popular formats, simply paste your content and get...

Marreta is a tool that removes access barriers and visual distractions.

Redirects all YouTube links to Invidious. Previously hooktube-redirect, but changed since Hooktube is no longer allowed to use the YouTube API, apparently.

Invidition is an extension allowing you to redirect YouTube and X requests to their counterparts, Invidious and .

This Firefox add-on adds auto reload options to the tabs context menu & a toggle button to the toolbar.

Advanced web scraping API offers real-time data from sites, eCommerce, and more. Features live stats, easy onboarding, and AI data parsing.

Passwordmaker creates unique, secure passwords that are very easy for you to retrieve but no one else. Nothing is stored anywhere, anytime, so there's nothing to be hacked, lost, or stolen. PasswordMaker has been around since about 2003 and so is a mature, stable, popular...

As you browse the internet, sites you visit can attempt to take screenshots of your computer as a pixel-by-pixel unique digital "fingerprint" of you & and your devices. This is called canvas fingerprinting.

Discover a stress free Gmail where nothing falls through the cracks.