Window Resizer

Window Resizer: Resize the browser window to emulate various screen resolutions.

Chrome Extensions

Resource info

Host

chrome.google.com

WhatFont is the easiest way to identify fonts on web pages.

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

Web Developer: Adds a toolbar button with various web developer tools.