Liorean's PNG versus JPEG & GIF test After reading through the PNG specification I decided to test how good the support in the newest version of the best browsers are. Here's a summary of my results.
 
Mozilla browser (0.9.6)
mozilla.org Netscape
Img tag: Imp.
Input tag: Imp.
Object tag: Imp.
Background: Imp.
Full transparency: Imp.
Alpha support: Imp.
Internet Explorer (6.0)
msie.org
Img tag: Imp.
Input tag: Imp.
Object tag: Not imp.
Background: Imp.
Full transparency: Imp.
Alpha support: Depending on image type — Not at all for true colour images. Alpha rendered as completely transparent for palette images.
 
Tests for image tag, variable resolution, compared with same image in JPEG or GIF format. Testpage availible here.
 
Mozilla screenshot Mozilla screenshot Mozilla screenshot Mozilla screenshot
MSIE screenshot MSIE screenshot MSIE screenshot MSIE screenshot
 
Site made by Liorean.
Best viewed in PNG, XHTML and CSS (1&2) compliant browsers with correct implementation of the box model.
[img tag included gif]