Ajaxload - Ajax loading gif generator Now here's a really useful Web 2.0 invention... a site that lets you generate custom progress indicator graphics for your ajax-enabled website. The problem with animated gifs is that the GIF format doesn't fully support transparency the way PNG-24 does. Because of this, animated gifs as progress indicators can look jaggy against backgrounds of different colors. With Ajaxload, you can custom-design your indicator to work perfectly against any solid-color background you like! There's a great variety of indicator styles, but all of them are of the 16-pixel variety except one, a 32-pixel animation straight out of Mac OS X.