[GM-help] PNG image takes more space after gm convert

[卢永菁]

Hi,

When I using GM utitly to convert a png image, the size becomes 3x bigger than the origin one.
But when I use IM instead, the image size do not change much, What happening?

[GLENN PEHRSON]

Post by 卢永菁
Hi,
When I using GM utitly to convert a png image, the size becomes 3x bigger than the origin one.
But when I use IM instead, the image size do not change much, What happening?

Probably IM is writing an indexed image while GM is writing an RGB or RGBA image. It's a known

problem.


Glenn