Find all interlaced PNGs in
identify -verbose *.png | grep Interlace
mogrify -interlace none logo*
Remove execution rights (while we are at it):
chmod -x logo*
optimize the PNG losslessy:
optipng -o 9 logo*.png
Let's hope noone has a internet connection slow enough that they can watch single pixel appear while loading a 4KB image (who would benefit from interlacing).
@Findus23 cheers for that. Looks like a few installation screenshots need to be updated: https://builds-artifacts.matomo.org/matomo-org/matomo/3.x-dev/37208/ Will you have time for this?