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The Best Mod and Extension for Slither.io! Mod Zoom, Play with Friends, Skins, Custom Skins, Bots

Reload page without using content stored in the browser cache to make sure you get any updates.

Adds the ability to open the page source in a new tab via button (Desktop) or menu (Firefox for Android).

An extension to open current browser page in Responsively app

Resize the browser window. The resolution list supports customization.

Detect which CMS a site is using with the help of WhatCMS.org

Debug Flash/SWF/Flex files on the web. Edit properties and inspect elements on the fly. View log output inside the extension. Run AS3 code against the active SWF. Profile memory consumption and much much more...

This add-on allows you to view your IP address from your browser without having to navigate to sites like https://www.whatismyip.com/ Furthermore, as this add-on is open source, you don't need to be worried about your privacy.

Zoom+in Youtube Videos

Scrum for Trello adds functionality to the awesome trello.com for use in Scrum projects. Add estimates or record time-spent directly on Trello cards. Shows sums at the top of each list and the top right corner of each board.

Inspects web pages for features and issues related to WCAG 2.2 level A and AA requirements for making web pages more accessible to people with disabilities using web accessibility standards, including WCAG, ARIA and ARIA in HTML specifications.

Add customized infinite scrolling to websites and auto load the next page. Supports the AutoPagerize and InfyScroll Databases.

ChatGPT for Google, Bing includes AI Image Generator. Chat with ChatGPT when you search🔍 and Generate AI images.🖼️

- Apply any CSS rules for any websites, including iframes. - Whitelist and Blacklist functionality - Apply CSS rules to specific URLs, Domains or Globally - Syntax highlighting & line numbers - Update without page refresh

Monitoring the browser network for all tabs and pages in a single page. Track network traffic / http traffic sent from each tab, or page and the response headers for each request. Filter requests to capture, filter requests to view

Block your Google Analytics™ activity for the websites you own, no more false stats.

Resize browser window or viewport to desired screen widths. Firefox's Responsive Design Mode (Ctrl + Shift + M) is great for mobile devices emulation.

Analyzes any web page for violations of best practices.

A HackBar for new firefox. This addon is written in webextension and alternatives to the XUL version of original Hackbar.

SEO Inspector scans the active page and applies a set of customizable rules to its contents. The results of the scan are displayed on a simple, elegant interface for manual inspection.

Button to refresh the current page without using the cache.

Profile your PHP application from your browser