Pre-development Extensions
Research your competition and form a plan of attack with these great extensions.
MeasureIt

Drag across any webpage to see the exact width and height in pixels that your development project needs to be.
ruul. Screen Ruler

A ruler pops up across your screen that you can drag around to measure any object on a webpage.
Tape

Rulers and grids to measure the pieces from any webpage.
WhatFont

Select text on a webpage to quickly and easily see what font it is.
Color Picker

Get the codes for any image on a webpage.
Eye Dropper

An alternative extension for discovering the codes for any color on a webpage.
TinEye Reverse Image Search

Find out where an image originates or if there are any different resolutions out there.
Search by Image

Right-click to initiate a Google Images search to find a different resolution.
Chrome Sniffer

See the content management system and javascript libraries running behind a site.
BuiltWith Technology Profiler

Find out how a website is built with the click of a button.
Wappalyzer

Uncover the technology used to build websites and apps.
Development Extensions
Dig in and start developing with these extensions.
Firebug Lite

Inspect Source Code, HTML, and CSS right in your browser.
Web Developer

A toolbar with a full suite of just about everything you need to look into the elements of a webpage.
Page Edit
Edit any HTML page in Chrome and export the HTML changes.
HTML Instant
Real-time code editor for HTML, CSS, and JS.
Pendule

Extends Chrome’s built-in developer tools with even more information.
Code Cola

Visually edit a page’s CSS.
PerfectPixel

Overlay a semi-transparent image on a webpage to perform a pixel-to-pixel comparison.
Development Testing Extensions
Your app or site is ready…or is it? Give these extensions a shot to test everything before you publish.
Forget Me
Clear Cache
Clear
Click&Clean

4 separate extensions that make clearing cache and cookies very simple. Features include one-click access to clear cache and selected cache clearing.
User-Agent Switcher

Trick the web into thinking you’re on a different browser/device to see how your app or site performs.
Resolution Test

Test how your app or site displays on a wide variety of screen resolutions.
IE Tab
IE Tab Multi

The scourge of every developer’s existence. Check out how your app or site displays in Internet Explorer.
Validity

Quickly validate your code by clicking an icon in your browser’s address bar.
PlainClothes

Remove all style from the web to more quickly and easily diagnose problems.
YSlow
Speed Tracer

Investigate why your creations are running so slowly and how to fix them.
Chrome Daltonize!

Test your apps and sites for accessibility from the colorblind.
Check My Links

Are all the links on your site working? Check it out with this fast-acting extensions.
After The Deadline

Sometimes you’re too busy worrying about coding and development to worry about speeling. let this extension help!
Websecurify

Test your app’s security right in your browser.
General Productivity Extensions for Developers
Stay efficient and on-task with these extensions.
Awesome Screenshot
Capture and annotate your screen to better communicate changes you recommend or want made.
Web Timer

See how you spend your time on the web and how you can improve your attention-span and efficiency.
Lorem Ipsum Generator

Create dummy text to place inside your sites or apps quickly and easily.
Linkclump

Drag over multiple links to open them all at once in new tabs.
AutoPagerize

Load paginated pages in one page.
Website Blocker

Block your access to specific websites that you know will distract you from your work.
Session Manager

Save sessions to quickly view a huge number of tabs you may have open at a later date.
LastPass

You have a ton of passwords to keep track of so let LastPass do it for you securely.
Domain Checker

View the availability of a domain right from your toolbar.
Tab Resize
Resize all your tabs and display them in organized layouts on your screen to simulate multi-monitor setups.





Hey Kyle,
Thanks for this awesome collections…
Keep it up!
As a toolbar developer, all 44 toolbars are very important and applicable for me. Web timer & Websecurity both are very practical for me. Thank you for giving such a detail explanation about all of them.