The Metadata in PNG files » History » Revision 2
Revision 1 (Tuan Nhu, 10 Aug 2013 10:31) → Revision 2/16 (Tuan Nhu, 10 Aug 2013 22:39)
h1. The Metadata in PNG files
h2. 1. PNG File Structure.
The Portable Network Graphics (PNG) is a raster graphics file format that supports a portable, legally unencumbered, well-compressed, well-specified standard for lossless bitmapped image files.
A PNG always starts with an 8-byte signature: 137 80 78 71 13 10 26 10 (decimal values).
The remainder of the file consists a series of chunks beginning with an IHDR chunk and ending with an IEND chunk.
h2. 1. PNG File Structure.
The Portable Network Graphics (PNG) is a raster graphics file format that supports a portable, legally unencumbered, well-compressed, well-specified standard for lossless bitmapped image files.
A PNG always starts with an 8-byte signature: 137 80 78 71 13 10 26 10 (decimal values).
The remainder of the file consists a series of chunks beginning with an IHDR chunk and ending with an IEND chunk.