Leudachain
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.
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Fontstorage
The simplest extension for identifying and selecting fonts on a website.
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Browserling - Cross-browser testing
Cross-browser test websites in the most popular browsers such as Internet Explorer, Edge, Chrome, Firefox, Safari and Opera. Try for free!
Web Edit
Easily edit websites temporarily with a click of a button.
Youtube converter button - YTLoad
YouTube downloader FREE - Convert videos to MP3 MP4
Hex Calculator
Perform quick and accurate hexadecimal calculations — addition, subtraction, multiplication, and division with remainder — directly in your Opera browser.
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
Disable Cookies
Disable cookies for current domain.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
PIX Studio Plugin
PIX RPA Studio Plugin
Picture in Play
Indicates whether the `picture` element is in use on a page.
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Network Information
Useful information about your system's connection including, type, speed, and rtt.
CSSViewer
CSSViewer
NPM Version Stats
Show npm package version usage statistics inline on the npmjs.com package page in the versions tab
View Page Source
Get access to the page source with the click of a button.
Random password generator
A simple random password generator for Opera browser
Font Inspector
Click on any HTML element to get the font info in a popup!
retire.js
Scanning website for vulnerable js libraries
Extensions for Mermaid
A browser extension for Chrome, Opera & Firefox that adds Mermaid language support to GitHub. A fork from the not updated GitHub + Mermaid extension.
HypeStat Analyzer
Check any website's traffic
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, ...
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
Reddit to Mp4 converter | reditor
redditdownloader.us allows users to download Reddit videos with audio in high quality.
TwicPics Companion
Using TwicPics has never been so easy!
Image Resizer
Rescale multiple images into different sizes in a single step