Improvement: Picture-quality after scaling

[Chron-O-John]

Hi, I recently tried fluxgym and found out, that when down-scaling jpg-files they will be saved with 75% quality (compression) setting, which is the default in PIL when no parameter is given.
75% produces visible artifacts, so it should be saved lossless (e.g. PNG) or at least with 95% quality-setting.

[technerd-official]

How to prevent this? What parameters and where?

Made a comparison between resized files in FluxGym and export from Photoshop (512px shortest edge) and yes the Photoshop files are way sharper.

Im trying now to export to the resolution needed (512px shortest edge) directly from Photoshop.

[Chron-O-John]

well, either edit the source-code (it should be just 1 additional parameter in the function call) or - what I did, save the source-images pre-scaled as png