Skip to main content
Open Source
Glenn Randers-Pehrson's user avatar
Glenn Randers-Pehrson's user avatar
Glenn Randers-Pehrson's user avatar
Glenn Randers-Pehrson
  • Member for 9 years, 2 months
  • Last seen more than 6 years ago
Profile Activity
Stats
3,931
reputation
112k
reached
48
answers
0
questions
Communities
View all
About

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.

profile for Glenn Randers-Pehrson on Stack Exchange, a network of free, community-driven Q&A sites.

LICENSE: All my StackExchange contributions across all sites, except as noted within any particular contribution, are available under the standard SO/SE licensing terms (CC-BY-SA) or under the CC-0 Public Domain Dedication, at your choice.

[Open Hub profile]

Badges
View all badges
2
gold badges
20
silver badges
31
bronze badges
Top tags
View all tags
171
Score
9
Posts
19
Posts %
42
Score
11
Posts
23
Posts %
35
Score
6
Posts
12
Posts %
31
Score
5
Posts
10
Posts %
28
Score
5
Posts
10
Posts %
27
Score
6
Posts
12
Posts %
Top posts
View all questions and answers
answer
123
I lost the source code for programs I released as GPL. What to do?
Aug 29, 2017
answer
14
How to prevent contributors from claiming copyright on my LGPL-released software?
Oct 10, 2016
answer
12
Is it legal to charge for distributing the source of a software which uses GPLv2 components?
Sep 23, 2016
answer
12
Can I use a proprietary library in my GPL'd program?
Dec 19, 2015
answer
11
is CC BY license GPL compatible? CC BY vs CC0
Aug 19, 2015
answer
11
Can I modify source code licensed under MIT license without publishing my changes?
Aug 31, 2015
answer
11
Will a dual license lock me in to a provider?
Oct 4, 2015
answer
11
What license do I apply to my software if parts of its code is derived from MIT licensed open source software?
Sep 21, 2016
answer
9
What does the Open Source Initiative say about proprietary software?
Dec 17, 2015
answer
8
Use of a BSD License software in a thesis
May 21, 2017
Top Meta posts
2
2
6
How do we feel about pedagogical questions?
5
Is on-topic humor appropriate?
4
Rename "stackoverflow" tag to "stackexchange"
3
Why was this question reopened by a mod?
Top network posts
View all network posts
264
libpng warning: iCCP: known incorrect sRGB profile
36
Dither a Grayscale Image
31
How do I keep track of many, many clients in a single shoot (like a school portrait day)?
31
Find out if PNG is 8 or 24?
31
Android Studio: "libpng warning: iCCP: Not recognizing known sRGB profile that has been edited"