Tiện ích mở rộng
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Image Resizer
Rescale multiple images into different sizes in a single step
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
Picture in Play
Indicates whether the `picture` element is in use on a page.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
OctoLinker
OctoLinker – Links together, what belongs together.
Reddit to Mp4 converter | reditor
redditdownloader.us allows users to download Reddit videos with audio in high quality.
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Web Widgetizer
Web Widgetizer is a extension offering a range of features to enhance browsing. It allows users to create separate Opera windows for specific websites, manage favorite links, customize window dimensions, toggle auto-start, and open links in popup tabs via button click or shortcut (Ctrl + Shift + A). This versatile tool optimizes browsing convenience and efficiency.
HTTP Headers
Quickly view the HTTP headers of the current tab.
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
NsLookup - Find DNS Records
A simple and powerful tool for querying DNS records
Rabbit URL Opener
Rabbit URL Opener (Rahul Digital) - Bulk URL's Opener Extension just lets you open multiple URLs at once. More about Rabbit URL Opener http://rahuldigital.org/url-opener/ http://rahuldigital.com/url-opener/
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
sha1 hash generator
SHA1 hash generator (offline mode)
W3DNA
Type '*' plus press "space" and a search term into the Omnibox to open search in new tab.
PixelGrid
The tool to overlap your website layout with a grid.
InTab - Code CSS 2X Faster
Visually Style Any Website In Any Browser
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Web Capture for Jira
Take a screenshot, annotate it and upload directly to Jira.
JxArşiv | Araçlar
Currency, Meter, Square, VAT, Percentage, Letter, Word Count, Age Calculation and Archives ...
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
HypeStat Analyzer
Check any website's traffic
(X)HTML5 Checker
A small extension to validate the markup of current tab
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.
md5 hash generator
MD5 hash generator (offline mode)
Gridify - Keyboard Link Selector
Select any link, image, input box, or a selectable region on the current page without using the mouse just by a few keyboard hits
Piral Inspector
The official Piral developer tools browser extension.
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