Now you know when you edit images in Photoshop, Paint Shop Pro, or (my favorite) Paint.NET, you see that gray and white checkerboard wherever there is transparency? Do you ever wish you had that in your web browser (especially when viewing images as pages?) Have you been looking for something that can add that? Well look no further, as I have bookmarklets (small pieces of code you can bookmark and execute on a whim) that can do that.
Simply drag one of these links onto your Bookmarks toolbar
EDIT: I forgot. The Links bar thing was supposed to be a joke about Firefox being better than Internet Explorer (which it is!) but it turns out these bookmarklets don't work in IE due to their use of the data: URI scheme. IE users, click here. Or, for an alternative solution, click here.