Ah, damn, the forum automatically converted my png to jpeg with a compression. here is a wetransfer link to the png file : and this is the result i…

hey, thanks a lot for your answer. I just tried, and it doesn’t really solves it, at the end it saves a 16bits png, but the image is still modified, …

It seems that Dotnet GDI+ can only handle 8bit images. So that might be a dead end unless someone says differently. I saw a few external libraries to…

Hi, I have the same problem and I am looking for a solution. Any have solved it yet ?