I routinely have need to convert PNGs from 600 PPI to 300 PPI. Individually I can open an image then choose Picture>Size>Scale in which I can choose to keep the same width/hight but change the PPI. Great, exactly what I want and do. But I would like to make use of GC's batch abilities. I can not find the right processes/settings/whatever. If I choose 'Resolution' I then can choose to set the PPI and also to 'Convert picture' or not. If I do choose to convert the picture I get the decreased resolution but also decreased hight/width. Not what I want. If I choose not to convert the picture hight and width are maintained but the files grow (e.g. from 11 MB to 13 MB). I get the same width hight and decreased resolution but at a larger size. Again, not what I want. I tried adding another process: Scale, with hight/width to stay 100%. I then set the resolution to 300 and choose to convert the picture and had it higher than the Scale process, hoping it would run, reducing the resolution and then the Scale would insure the hight/width would be the same. Nope. Gotta believe I'm doing something wrong and/or neglecting something!