- W3C: PNG - http://www.w3.org/Graphics/PNG
W3C overview of PNG. Includes browser tests to see if gamma and alpha work correctly.
- PNG - http://www.libpng.org/pub/png/
Information, applications, and code relating to the PNG image format.
- PNG Specification - http://www.w3.org/TR/REC-png-multi.html
The official W3C recommendation specification for PNG.
- Open Source Graphics with PNG - http://www.linuxworld.com/linuxworld/lw-1999-09/lw-09-vcontrol_3.html
Joe Barr discusses PNG, the new open source file format, and the Unisys/CompuServe/GIF controversy. [LinuxWorld]
- The Story of PNG - http://www.libpng.org/pub/png/slashpng-1999.html
An article detailing the history of the PNG format.
- Explorer versus PNG (AlphaImageLoader) - http://redvip.homelinux.net/varios/explorer-png-en.html
Information on displaying transparent and translucent (alpha channel) PNGs in Internet Explorer and other browsers.
- PNG-Tech - http://www.cs.toronto.edu/~cosmin/pngtech/
A collection of comments, impressions, comparisons, experiments and ideas regarding the PNG (Portable Network Graphics) file format, and related technologies: ZLIB (Data Compression Format and Library), and MNG (Multiple-Image Network Graphics). It is focused on the compression algorithms used in PNG.
- MSDN - AlphaImageLoader Filter - http://msdn.microsoft.com/library/default.asp?url=/workshop/author/filter/reference/filters/AlphaImageLoader.asp
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 Graphics (PNG) image, tranparency—from zero to 100 percent—is supported.
- PNG Tips for Cartoonists - http://hackles.org/etc/png.html
Article written to encourage cartoonists to use PNG and to share tips on exploiting PNG's strengths.
- PNG Resources of the Miscellaneous Persuasion - http://www.libpng.org/pub/png/pngmisc.html
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.
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