Effective and lossless jpg image compression. Like ImageOptim for jpgs.

A gif for any mood.

A class for converting an image to it's CSS base64 representation.

Notes on porting to JS and implementation in ImpactJS

HQX image scaling algorithm ported to Javascript/Canvas by the guy who made ImpactJS.

Web app for PNG optimization. You upload to their servers.

Command line image compression tool.

Re-builds all of your thumbnails if the sizes change, so you don't have to re-upload them.

So every photo, image or illustration NASA has ever created is in the public domain. This is a good place to get ahold of those images for design purposes.

Million + images from the TIME archives, hosted and searchable by Google. Free for personal use.

Scale background images smoothly, like flash. Holy. Crap.

Preloads background images in CSS to speed things up.

Lightboxing script with a smooth, mac-like interface.

Free texture photos. Great for making Photoshop grunge brushes. Hat tip to Veerle for blogging about it.

A possible microformat for increasing the semantic meaning in image "float" classes. Instead of "img.left", "img.right", etc, he proposes "img.figure.figure-a", "img.figure.figure-b", etc.

New York Times. An image list of prefab home manufacturers.

Easily add rounded corners, borders, dropshadows, and rotation to images. Works with the dark arts of DOM scripting and flash to provide progressively-enhanced sweetness that is accessable and standards-friendly.

Like cliffsnotes for mod_rewrite.