....wow

Note: Although in larger res at the FN source link, the image is a JPG and smaller file size than fancygoat's upload.

Why though?

Frederik said:
Why though?

PNG is a compressed lossless format, which allows representation of images without loss of data integrity via the DEFLATE algorithm. It's overall preferable for archival purposes due to having no visible compression artifacts, though detail in images may be superior in a JPG of far larger resolution. For example, a thumbnail-sized PNG will not have as much visible detail as a hi-res JPG of the same image, even when enlarged.

e621 encourages posting the version with the largest file size, which is generally a good way of encouraging the 'best' version of the image is posted, though clarity and quality is still a bit subjective.

Strongbird said:
PNG is a compressed lossless format, which allows representation of images without loss of data integrity via the DEFLATE algorithm. It's overall preferable for archival purposes due to having no visible compression artifacts, though detail in images may be superior in a JPG of far larger resolution. For example, a thumbnail-sized PNG will not have as much visible detail as a hi-res JPG of the same image, even when enlarged.

e621 encourages posting the version with the largest file size, which is generally a good way of encouraging the 'best' version of the image is posted, though clarity and quality is still a bit subjective.

But the FA one is also PNG, isn't it?

Frederik said:
But the FA one is also PNG, isn't it?

Well, yes, that was the version posted here. The FN link is a JPG, as well as the version posted by the artist themselves.