[petitg1987]

The generated screenshots are lighter (about 5%). However, the resource images in QOI format that I load are in average a little bigger (about 5% and sometimes until 35%). I guess it is not the perfect solution for AAA games which already use more than 30go nowadays.

[flohofwoe]

"AAA games" (or rather any 3D games) typically use lossy image file formats which directly map to the hardware-compressed GPU texture formats (like DXTx/BCx in DDS or KTX containers), QOI is an interesting alternative where lossy formats don't work well though (e.g. pixel art).