Rozšíření
ModHeader
Modify HTTP request and response headers
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Octotree
GitHub on steroids
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
SEO-tools
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
RDS bar
Quick SEO analysis of websites and pages, designed for webmasters and SEOs.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
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, ...
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
stylish-hub
A browser extension that brings a new GitHub experience
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
HTTP Headers
Quickly view the HTTP headers of the current tab.
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
AddJS
This extension allows you to add your own custom website specific JavaScript.
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!
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
DNS Checker - SEO and Domain Analysis
SEO and Domain Analysis Tool by DNS Checker. Provides SEO Report, Meta Redirects and 404s, Client IP, Domain IP & Geo Location, etc
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
Random password generator
A simple random password generator for Opera browser
Lorem Fill
A webpage form filler that populates context specific random test data into forms elements.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
(X)HTML5 Checker
A small extension to validate the markup of current tab
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Nextsense XML Signing Component
Signing XML document.
JavaScript QR Code
Make QR Codes in JavaScript
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor