JPEGmini, a new utility.
A facility has been recently announced that claims to ". . . radically reduce the size of a photograph . . ." (I assume a JPG)
A quote from the authors: "We take an image, make it five times smaller, but always guarantee that the JPEGmini image looks exactly like the original."
Here is a screen grab of a small portion of a 100% crop of a D800 image, JPG High, 1,547,093 bytes, on the right, and the JPEGmini image, 1,174,900 bytes, extracted from the first, on the left. I can't tell much of a difference. Can you?
Certainly not 5:1 in this example, but a 24% reduction in size. Useful, I guess, for web pages where load time is critical.
Attachment#1 (jpg file)
#1. "RE: JPEGmini" | In response to Reply # 0kj_fi Nikonian since 18th Jul 2007Mon 08-Jul-13 06:54 AM
the halo around the birds back seems to have increased.
One might want to evaluate the software using sharp targets, e.g., pictures of architecture. The artefacts coming from compression are not necessarily visible in natural objects.