7 links
MSDN - AlphaImageLoader Filter
msdn.microsoft.com
Displays an image within the boundaries of the object and between the object background and content, with options to clip or resize the image. When loading a Portable Network Graph…
PNG Resources of the Miscellaneous Persuasion
libpng.org
Links to images, mailing lists, test images, PNG and image compression documents, comics and websites using PNGs, the official site, and some unofficial resource sites.
The Sad Story of PNG Gamma Correction
hsivonen.iki.fi
Explains how PNG gamma "correction" causes color mismatches with other colors on web pages.