Jan Wessel 0 Report post Posted March 23, 2018 libpng warning: iCCP: known incorrect sRGB profile (solved) I had lots of these warnings in the apache error log. After some Googling I found that it could have something to do with a color profile in .png files. Some changes in libpng version 1.6+ cause it to issue a warning or even not work correctly with the original HP/MS sRGB profile, leading to the following stderr: libpng warning: iCCP: known incorrect sRGB profile So I used Graphic Converter (https://www.lemkesoft.de/) (I'm on Mac OS) and sanatised (i.e. removed EXIF, IPTC etc) all the PNG files in the /img folder. So far I have not seen this warning anymore. See also:https://wiki.archlinux.org/index.php/Libpng_errors Just to share if someone has seen this too in his logfile and want to get rid of it. Jan Share this post Link to post Share on other sites
