FrankC

Not that I can see, and if I can't see it in the images of the said sizes, my site visitors will not, either. The rest of your answer would indeed explain what is happening, which was my first question. Thanks for that. And with MS Paint I can resize in a way that I like. But I'd still like paint.net to do it the same way, because I prefer to have to use just one program for all my image editing. Is there a Feature Request possibility for paint.net, that you know of?

I need to keep the quality the same, so I have to keep it at 100%. And 4:2:0 results in a file size of 379 kB. Slightly less, but still a significant increase. When I use Paint, the standard Windows program, these problems do not occur. Any ideas?

Hello, I looked under Frequently Asked Questions and searched with <"file size" (bigger OR increases)>, but didn't find an answer. This is my question: I have a .jpg image of 1600 x 944 which is 290 kB. When I downsize it to 1000 x 590 and keep it at 100%, it increases in file size, namely to 399 kB. Why is that? And how do I downsize it so that the file size gets smaller proportionally?