libpng warning:

[ghost]

libpng warning: Interlace handling should be turned on when using png_read_image

[MrPetovan]

What version are you running? The new one (version 2 onward) or the legacy dir project?

[ghost]

The new one 2.1.0

[MrPetovan]

I can't find any resource online about this error pertaining to a specific PHP code snippet, Can you please check your libpng version?

[ghost]

identify -list format | grep PNG JNG PNG rw- JPEG Network Graphics MNG PNG rw+ Multiple-image Network Graphics (libpng 1.6.34) PNG PNG rw- Portable Network Graphics (libpng 1.6.34) See http://www.libpng.org/ for details about the PNG format. PNG00 PNG rw- PNG inheriting bit-depth, color-type from original if possible PNG24 PNG rw- opaque or binary transparent 24-bit RGB (zlib 1.2.11) PNG32 PNG rw- opaque or transparent 32-bit RGBA PNG48 PNG rw- opaque or binary transparent 48-bit RGB PNG64 PNG rw- opaque or transparent 64-bit RGBA PNG8* PNG rw- 8-bit indexed with optional binary transparency root@mail:~#

[MrPetovan]

Thanks, there was that one issue that was supposed to be solved in libpng 1.5.something, but you already are at version 1.6.

I've got nothing. 🤷‍♂️

[AndyHee]

libpng warning: Interlace handling should be turned on when using png_read_image

I can confirm this warring that's clogging up my log too. I'm on libpng 1.6.28 version.

[AndyHee]

I'm looking at the discussions here: https://sourceforge.net/p/libpng/bugs/237/ the warning might actually relate to PHP.

[MrPetovan]

Yeah, I feel like we've been doing image manipulation wrong for a while.

[AndyHee]

OK, no worries.