Essential Web Developer Tools (Validation, Browsers, Transparent PNG’s and More)

When getting ready to design and develop any web site – whether for a client or for myself – there are a few sets of resources that I find myself going back to EVERY single time.

Of course I save all the great resources I come across on Delicious, however only a select handful get an “essential” tag for quick reference.

I’m here to share with you a few of the sites that I consider to be “must have’s” in any web developer’s toolbox – and find out which resources you find absolutely necessary, as well!