On Tuesday, July 15, 2014 3:34:35 PM UTC+1, Josh Aas wrote: > This is the discussion thread for Mozilla's July 2014 Lossy Compressed Image > Formats Study and the Mozilla Research blog post entitled "Mozilla Advances > JPEG Encoding with mozjpeg 2.0".
Josh, I work for CloudFlare on many things but recently on image compression. We have a product called "Polish" that recompresses images for our customers automatically. As we are in the process of rolling out a new version I looked at mozjpeg 2.0. I selected 10,000 random JPEGs that we were caching for customers and ran them through mozjpeg 2.0 via jpegtran. Some interesting facts: 1. 691 files were not compressed further. This compares with 3,471 that libjpeg-turbo did not compress further. 2. Of the compression files the average compression was about 3%. 3. Run time was about 1.7x the libjpeg-turbo time. 4. I've put together a small chart showing the distribution of compression that we saw. It's here: https://twitter.com/jgrahamc/status/490114514667327488/photo/1 We will continue to work with mozjpeg 2.0 experimentally with the hope that run time can be brought closer to what we had before as the compression looks good. John. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
