>>3013475It's probably the subsampling. I did a little experimenting and Paint saves JPGs as quality 94 with 2x2 subsampling.
Interestingly, Paint reads some PNG tEXt chunks (zTXt and iTXt chunks are ignored) and writes them into EXIF.
>PNG keyword "Description" is written as EXIF keyword "Description">PNG "Source" written as EXIF "Model">PNG "Software" written as EXIF "Software">PNG "Author" written as EXIF "Artist">PNG "Copyright" written as EXIF "Copyright">PNG "Comment" written as EXIF "UserComment" with a seemingly random character appended to the end of the text in what I assume is a bugPNG keywords Creation Time, Disclaimer, Title, and Warning as well as any nonstandard chunks are discarded.
This is the picture I used for the tests because Mikazuki is very cute.
