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Glenn Randers-Pehrson

Coauthor of PNG spec, developer/maintainer of libpng, on development teams for ImageMagick and GraphicsMagick. Author of pngcrush. Maintains PNG support in Firefox. Retired, father of four, grandfather of fifteen.

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18 Why does 1366x768 resolution exist? Jul 27 '15
4 Find out PNG transparent background color on Linux May 14 '15
4 Can PNG images contain embedded thumbnails like JPG files? Oct 5 '17
3 Create empty truecolor PNG with ImageMagick Jun 28 '15
1 Identify specific PNG format Dec 16 '15
1 Batch Inverting .PNG Images while maintaining transparency Mar 3 '16
1 Why do these PNG images differ so much in size? Mar 9 '16
0 Is it possible to retrieve the compression level from a png image? Sep 16 '16
0 Optimizing gzipped files for block-level deduplication Sep 23 '16
0 Split .png into multi-page pdf with imagemagick based on whitespace Sep 5 '17
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