Screengrab! Firefox Extension

Screengrab! Firefox Extension is a handy web development tool with 6 excellent options. Screengrab! saves or copies to clipboard web pages as images.

YSlow Firefox Extension

YSlow analyzes web pages providing a performance / speed report based on Yahoo’s rules for high performance web sites.

Yslow Firefox Extension works together with Firebug so make sure you have both downloaded.

It is easy to miss the (fine) print on the YSlow download page and some people fail to also install Firebug and are unable to launch or even find Yslow.

MeasureIt Firefox Extension

MeasureIt is one of those basic but super useful Firefox Add-ons that web designers love.

IE View Firefox Extension

IE View Firefox Extension lets you see pages in Microsoft Internet Explorer with a single right-click. It is possible to mark specific web sites to always load in IE.

Flashblock Firefox Extension

Flashblock Firefox Extension blocks annoying bandwidth hogging Macromedia Flash, Macromedia Shockwave and Macromedia Authorware content from web pages you visit.

Colorzilla Firefox Extension

Colorzilla Firefox Add-on is a lot more than a simple eye dropper and color picker, it can be a valuable tool when researching and designing web site color schemes.