Glenn Randers-pehrson
(Volunteer) Software Developer And Maintainer at Portable Network Graphics (PNG) Development Group
Cockeysville, Maryland, United States
Summary
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RockstarGlenn Randers-pehrson is a veteran software developer and maintainer with 17 years of recorded experience and a long-standing volunteer role with the Portable Network Graphics (PNG) Development Group since 1995. His background blends deep scientific rigor—years as a physicist and research scientist at institutions including Lawrence Livermore National Laboratory and the US Army research labs—with hands-on computer science practice. He has led applied research and senior science roles, translating complex physical and computational problems into practical, maintainable software. Now based in Cockeysville, Maryland, he continues to steward open standards for image formats, bringing institutional memory and meticulous attention to interoperability and robustness. Notably, his career arc spans from geophysics and ordnance work to contemporary software maintenance, reflecting a rare combination of experimental science and long-term open-source stewardship.
17 years of coding experience
15 years of employment as a software developer
Stackoverflow
12,210reputation
1.2mreached
246answers
0questions
image
top-1%
warnings
top-1%
rgb
top-1%
imagemagick
top-1%
image-processing
top-5%
responsive-design
top-5%
Github Skills (23)
image-processing10
image10
image-conversion10
c1110
c1710
warnings10
image-manipulation10
png10
rgb10
imagemagick10
bitmap9
responsive-design9
data-structure7
data-structures7
libpng6
Programming languages (7)
Github contributions (5)
glennrp/pmt
Jan 2015 - Nov 2017
pngcrush and other PNG and MNG tools
Contributions:68 pushes, 5 branches, 21 tags in 2 years 9 months
glennrp/libpng-releases
Jul 2015 - Oct 2017
Contributions:28 pushes, 1 branch, 10 tags in 2 years 2 months
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