Sulman From United States of America, joined Mar 2004, 2037 posts, RR: 31 Posted (10 years 4 months 3 weeks 6 days 17 hours ago) and read 4787 times:
I understand from the upload page that a.net uses image compression of some sort: "Do not worry about long download times for low compression files, our scripts will automatically optimize compression without loss in picture quality.". Indeed some of my images do appear to have smaller file sizes (to be honest I rarely check the size, as I've never had a problem with the 1024kb limit) sometimes 2/3 smaller.
To my eyes, the quality is still there in comparison to the original upload, so how do they do it? Is it just bog-standard jpeg compression? Have any contributors ever noticed quality problems due to it? Just curious.
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ChrisH From Sweden, joined Jul 2004, 1136 posts, RR: 15
Reply 2, posted (10 years 4 months 3 weeks 6 days 12 hours ago) and read 4691 times:
The a.net compression has some troubles with strong red colours. Ive uploaded some pics of Sterlings red 737 for instance where on the submitpage I chose not to, cause the sharpness got lost around windows and logos on the body.
Pilottim747 From United States of America, joined Jul 2001, 1607 posts, RR: 5
Reply 3, posted (10 years 4 months 3 weeks 4 days 8 hours ago) and read 4605 times:
The scripts usually works fairly good, considering what they do. However, the originals are obviously better quality than the compressed files. It seems that the sharpness of the photo is affected (like ChrisH said).
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