Extensions
SeoQuake extension
SEOquake est un plug-in gratuit qui vous fournit les principales métriques de référencement ainsi que d'autres outils utiles tels que l'Audit SEO et bien d'autres
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
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!
Picture in Play
Indicates whether the `picture` element is in use on a page.
Page Edit
Make any webpage into a content editable document and modify it via toolbar popup!
showHTML
This extension shows information about HTML elements on a web page when you hover over them.
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Fontstorage
L'extension la plus simple pour identifier et sélectionner des polices sur un site web.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
Reddit to Mp4 converter | reditor
redditdownloader.us allows users to download Reddit videos with audio in high quality.
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Youtube converter button - YTLoad
YouTube downloader FREE - Convert videos to MP3 MP4
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
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.
Disable Cookies
Disable cookies for current domain.
TwicPics Companion
Using TwicPics has never been so easy!
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.
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
IP Geolocation Lookup
IP Location Lookup by ipwhois.io
Font Inspector
Click on any HTML element to get the font info in a popup!
Favicon Stealer
Very simple thing for their job
(X)HTML5 Checker
A small extension to validate the markup of current tab
View Page Source
Accéder au code source de la page lors d’un clic sur un bouton.
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
SelectorsHub
Locators Plugin to Auto Generate and Verify Playwright Locators, XPath & CSS Selectors.
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
RestMan
RESTMan is a browser extension to work on http requests.
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
NoFollow
Outline nofollow links, detect nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles.
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, ...