Розширення
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
CSSViewer
CSSViewer
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.
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
Copy Title And Url
Copy the title and url in markdown, pukiwiki, html format.
Extension source viewer
View source code of extensions in the Chrome Web Store, Firefox or Opera addon gallery. Has button to install from Chrome Web Store.
PerfectPixel by WellDoneCode
This extension helps develop your websites with pixel perfect accuracy!
Font Finder
An easy-to-use font inspector to get CSS styles of the selected element
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
FullScreen for Opera
Fullscreen, #1 Zoom and Dark Mode more options will get in one
SEO-tools
SEO-tools - інформація про домени, аудит сайтів на SEO помилки, а також технічний аудит будь-якої сторінки. Понад 100 онлайн-сервісів
Fontstorage
Простий спосіб визначити чи підібрати шрифт на сайті.
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Clear Cache
Clear your cache and browsing data with a single click of a button.
Image Extractor
Extracts image names and allows copying image URLs.
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
Page Edit
Make any webpage into a content editable document and modify it via toolbar popup!
Picture in Play
Indicates whether the `picture` element is in use on a page.
Image Resizer
Rescale multiple images into different sizes in a single step
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
Octotree
GitHub on steroids
Disable Cookies
Disable cookies for current domain.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Web Edit
Легко тимчасово редагуйте веб-сайти одним натисканням кнопки.
Youtube converter button - YTLoad
YouTube downloader FREE - Convert videos to MP3 MP4
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
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.
Font Inspector
Click on any HTML element to get the font info in a popup!
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps