Extensions
Picture in Play
Indicates whether the `picture` element is in use on a page.
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
Fontstorage
The simplest extension for identifying and selecting fonts on a website.
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Octotree
GitHub on steroids
SeoQuake extension
SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others
Web Edit
Easily edit websites temporarily with a click of a button.
Live editor for CSS and LESS - Magic CSS
Live preview of CSS/LESS code with an in-page editor. Autocomplete, convert LESS to CSS, beautify, minify, CSS reloader, linter, ...
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Youtube converter button - YTLoad
YouTube downloader FREE - Convert videos to MP3 MP4
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Random password generator
A simple random password generator for Opera browser
Network Information
Useful information about your system's connection including, type, speed, and rtt.
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
Favicon Stealer
Very simple thing for their job
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
Disable Cookies
Disable cookies for current domain.
IP Geolocation Lookup
IP Location Lookup by ipwhois.io
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
Font Inspector
Click on any HTML element to get the font info in a popup!
CSS & JS Injector
Easily customize your browsing experience CSS & JS Injector is a tool for developers, designers, and power users. Apply custom CSS styles and JavaScript to specific websites effortlessly. Boost productivity and customize the look, feel, and functionality of websites without altering its source code.
View Page Source
Get access to the page source with the click of a button.
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
PIX Studio Plugin
PIX RPA Studio Plugin
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
SelectorsHub
Locators Plugin to Auto Generate and Verify Playwright Locators, XPath & CSS Selectors.
CSSViewer
CSSViewer
RestMan
RESTMan is a browser extension to work on http requests.
GitHub Extension
The GitHub Browser Extension allows GitHub users to quickly find and open all of their assigned issues and pull requests from a single location. It can be handy for developers and project managers to view their tasks.