WD-png-960221
PNG (Portable Network Graphics) Specification
Version 0.94
W3C Working Draft 21-Feb-1996
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The PNG format has been frozen since the Ninth Draft of March 7, 1995,
and all future changes are intended to be backwards compatible.
The revisions since the Ninth Draft are simply clarifications,
improvements in presentation, and additions of supporting material.
Changes since the Tenth Draft of 5 May, 1995
- Clarified meaning of a suggested-palette PLTE chunk in a
truecolor image that uses transparency
- Clarified exact semantics of sBIT and allowed bit depth
scaling procedures
- Clarified status of spaces in tEXt chunk keywords
- Added a "Creation Time" tEXt keyword
- Macintosh representation of PNG specified
- Added discussion of security issues
- Added a glossary
- Added more extensive discussion of gamma and chromaticity handling
- Editing and reformatting
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