**COMIC Penguin Club 2014-07 \[雑誌\] COMIC ペンギンクラブ 2014年07月号 Vol.335** **Lossless** optimization of the black and white pages, reduced file size from 692 MB to 385 MB. Resolution and color pages are unchanged. Original: [\#487703](http://sukebei.nyaa.se/?page=view&tid=487703) Grayscale PNG should not be saved in 24-bit color. Changing them to indexed colors (or even grayscale) and running optipng, etc, significantly reduces size. Hopefully more scan groups will use it in the future. Example P029.jpg: <http://screenshotcomparison.com/comparison/79392> 3179 KB -> 1580 KB, lossless (For comparison, quality 100 JPG is 2468 KB, quality 95 JPG is 1761 KB. So PNG beats JPG for clean B/W scans) Quote: Magazine Scanned by Team Comic ONE. Pure RAW and High quality. For more new magazine release, please visit Mikocon.com http://www.mikocon.com/forum.php?mod=forumdisplay&fid=46