Portable Network Graphics.
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The official W3C recommendation specification for PNG.
A firefox extension to allow the creation and editing of APNG files.
APNG from GIF
Simple command-line program to convert animated GIFs to APNGs.
An extension of the PNG image format, adding support for animated images. Includes full specification including file structure and version changes.
MSDN - AlphaImageLoader Filter
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, transparency from zero to 100 percent is supported.
Information, applications, and code relating to the PNG image format.
PNG Resources of the Miscellaneous Persuasion
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.
PNG Tips for Cartoonists
Article written to encourage cartoonists to use PNG and to share tips on exploiting PNG's strengths.
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.
Includes various free tools to create and manipulate PNG and MNG images, including an optimizer that can reduce the size of PNG images and a converter that can import BMP files.
Portable Network Graphics - PNG
Thorough introduction to PNG image format.
The Sad Story of PNG Gamma Correction
Explains how PNG gamma "correction" causes color mismatches with other colors on web pages.
W3C overview of PNG. Includes browser tests to see if gamma and alpha work correctly.
Open Source Graphics with PNG
Joe Barr discusses PNG, the new open source file format, and the Unisys/CompuServe/GIF controversy. [LinuxWorld] (September 09, 1999)
The Story of PNG
An article detailing the history of the PNG format. (February 27, 1999)
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Last update:March 15, 2015 at 23:10:51 UTC