Spray information

Does anybody happen to know the actual resolution and filesize limitations of a spray in GMod? I seem to be able to bring in a 1024x1024 spray with a few 100 kilobytes but some people can not see them in multiplayer even though I can. It doesn’t bother me because they seem to work in 512x512 or 768x768 but I was just curious about what the exact limits are? I can’t seem to find any reliable answer.

They’ll be resized to 512x512 if they are bigger. Also you have to consider some servers blocking sprays with sv_allowupload 0. That would cause only you to see your own spray.

Thank you.