Next, check out these add-ons.

ColorZilla – let’s you pick out any color on a webpage and save it’s RGB or HTML color value.

Web Developer’s Toolbar – this thing has saved many a day with it’s ruler, div selector and other great features.

Firebug – I don’t know how I survived without this. Offers real-time in-browser editing to any websites HTML, CSS and Javascript.

Screengrab! – Hands down, the best screen shooting program I’ve found to-date. You can save or copy the whole webpage, the visible portion, your own selection or the window.

IE Tab – face it, IE is a pain that has no standards. After using a standards-compliant browser to design and develop your site, use this plugin with a simple right-click option to view any page in IE. Then enjoy fixing all of it’s errors.

SEO Quake – a great toolbar to gain knowledge about the Google Page Rank, link structures and other important SEO factors.