GIF and PNG Transparency

Hard Edge Transparency

GIF

hard edge gif transparency - 53KB

PNG

hard edge png transparency - 57KB

Gradients

GIF

gradient gif transparency - 74KB

PNG

gradient png transparency - 100KB

Drop Shadows

GIF

text shadow gif transparency - 60KB

PNG

text shadow png transparency - 81KB

If you must use a GIF and want a drop shadow

Include the background color in your image

the gif fix for drop shadow - 70KB