הרחבות
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
Internet Speed Test
Test your internet connection speed (upload and download) from a toolbar panel
ModHeader
Modify HTTP request and response headers
View Page Source
Get access to the page source with the click of a button.
retire.js
Scanning website for vulnerable js libraries
Octotree
GitHub on steroids
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, ...
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
Rainbow States
Color AWS Step Functions states
Image Resizer
Rescale multiple images into different sizes in a single step
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
Stethoscope
Check the health of a github repo with one easy step.
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Octobox
Integrate Octobox directly into your GitHub workflow
Random password generator
A simple random password generator for Opera browser
Web Edit
ערוך בקלות אתרים באופן זמני בלחיצת כפתור.
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Network Information
Useful information about your system's connection including, type, speed, and rtt.
IP Geolocation Lookup
IP Location Lookup by ipwhois.io
Disable Cookies
Disable cookies for current domain.
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!
HexDump - Hex Viewer
Display file contents in hexadecimal, and ascii
(X)HTML5 Checker
A small extension to validate the markup of current tab
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.