Developer Tools

  • All
  • Featured
  • Established publishers
  • Most relevant
  • Highest rated

GoFullPage - Full Page Screen Capture

4.9(78.4K)

Capture a screenshot of your current page in entirety and reliably—without requesting any extra permissions!

ColorZilla

4.6(3.9K)

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies

JSON Formatter

4.6(1.9K)

Makes JSON easy to read. Open source.

User-Agent Switcher for Chrome

3.9(2.6K)

Spoofs & Mimics User-Agent strings.

Lighthouse

4.4(319)

Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.

Similarweb - Website Traffic & SEO Checker

4.6(3.4K)

Instant website analysis and SEO metrics at your fingertips.

PrintFriendly - Print, PDF, and Screenshot Web Pages

4.3(2.6K)

Make web pages printer-friendly, convert to PDFs, or capture screenshots. Remove ads for clean pages ready to print or save as PDFs.

SEOquake

4.5(2.5K)

SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others

Clear Cache

4.5(1.1K)

Powerful, user-friendly browser data management, right from your toolbar.

ModHeader - Modify HTTP headers

3.2(1.1K)

Modify HTTP request headers, response headers, and redirect URLs

SEO META in 1 CLICK

4.9(1.1K)

Displays all meta data and main SEO information for the best SEO

Postman Interceptor

4.3(957)

Capture requests from any website and send them to Postman Client.

Stylus

4.5(1.1K)

Redesign the web with Stylus, a user styles manager. Stylus allows you to easily install themes and skins for many popular sites.

Selenium IDE

3.4(287)

Selenium Record and Playback tool for ease of getting acquainted with Selenium WebDriver.

CSS Peeper

4.6(367)

Inspect website styles in seconds. Supercharge your workflow, and save hours of work.

Color Picker for Chrome™

4.0(127)

HEX, RGB Color picker, Advanched Eyedropper, Find color code on any page

WhatRuns

3.8(399)

Discover what runs a website. Frameworks, Analytics Tools, Wordpress Plugins, Fonts - you name it.

Detailed SEO Extension

5.0(198)

Get SEO insights at the click of a button to any website you're currently on. Built by full-time SEO's for daily analysis.

Fake Filler

4.4(754)

A form filler that fills all inputs on a page with fake/dummy data.

BuiltWith Technology Profiler

4.3(407)

Find out what the website you are visiting is built with using this extension.

Responsive Viewer

4.3(310)

Show multiple screens once, Responsive design tester

JSON Viewer Pro

4.7(144)

A completely free extension to visualise JSON response in awesome Tree and Chart view with great user experience and options. ✅…

Requestly - Free API Testing & Mocking Tool

4.3(1.2K)

Open-Source API Client & HTTP Interceptor. API Collections, Environments, JS Redirects, API Mocks, Modify Headers and Insert Scripts

Salesforce Inspector Reloaded

4.9(177)

Productivity tools for Salesforce administrators and developers to inspect data and metadata directly from the Salesforce UI.

Color Tab

4.2(1.4K)

A beautiful color palette with every new tab!

OCR - Image Reader

4.1(214)

A powerful optical character recognition (OCR) extension to capture and convert images to text

META SEO inspector

4.4(605)

This extension is primarily aimed at web developers who need to verify the HTML of their sites to ensure compliance with Google's…

Grepper

4.4(420)

The Query & Answer System for the Coder Community

VisBug

4.8(255)

Open source browser design tools

QR Code (Generator and Reader)

3.9(162)

Generate QR Code from the url of current page, link or selected text. And decode QR Code in image.

Jam

4.7(281)

Report and resolve bugs 10x faster.

Website SEO Checker

4.5(162)

Get free on-page SEO report by 100+ parameters with the best website SEO checker

Google apps