확장 기능
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
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.
PixelGrid
The tool to overlap your website layout with a grid.
Network Information
Useful information about your system's connection including, type, speed, and rtt.
Random password generator
A simple random password generator for Opera browser
retire.js
Scanning website for vulnerable js libraries
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Responsive Web Design Tester
Responsive Web Design Tester is a quick and easy way to test your responsive website.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
TwicPics Companion
Using TwicPics has never been so easy!
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
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
Font Inspector
Click on any HTML element to get the font info in a popup!
Income monitor
Fast balance viewer for your affiliate networks and partner programs
Stethoscope
Check the health of a github repo with one easy step.
Rainbow States
Color AWS Step Functions states
md5 hash generator
MD5 hash generator (offline mode)
KML/KMZ Viewer
Can be used to view KML/KMZ Files in the browser.
TeamCity Notifier
Shows notifications about various events in TeamCity
PX to REM and REM to PX
PX / REM bidirectional converter
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
RestMan
RESTMan is a browser extension to work on http requests.
Octotree
GitHub on steroids
stylish-hub
A browser extension that brings a new GitHub experience
Clone in VS Code
Clone any GitHub, GitLab or Bitbucket repository in Visual Studio Code
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, ...
Page Edit
Make any webpage into a content editable document and modify it via toolbar popup!
RDS bar
Quick SEO analysis of websites and pages, designed for webmasters and SEOs.
FullScreen for Opera
전체 화면, #1 줌 및 다크 모드 더 많은 옵션이 하나가됩니다.