On Monday 23 April 2012 00.40:49 Kyrill Detinov wrote:
On Sun, 22 Apr 2012 21:43:38 +0200 Bruno Friedmann wrote:
I would like to introduce a change in the default format used for our default-wallpaper in openSUSE
The facts Default jpeg (total ~4.1MB) Default png (total 4.7MB)
Have you tried 'optipng' or 'advancecomp' for reducing PNG size?
Any way, PNG wins.
-- WBR Kyrill
Kyrill thanks for the pointer ... Could be feasible at least and the result are quite good the sum of png is ~3.4MB now It takes time, but as it's not so frequently build ... time optipng -keep -preserve -nx -zc=9 -zm=9 -zs=1 -f=5 default-*.png OptiPNG 0.6.5: Advanced PNG optimizer. Copyright (C) 2001-2011 Cosmin Truta. ** Processing: default-1600x1200.png 1600x1200 pixels, 4x8 bits/pixel, RGB+alpha in opng_reduce_image_type in opng_validate_image in opng_reduce_bits in opng_analyze_bits Input IDAT size = 1207020 bytes Input file size = 1208915 bytes Trying: zc = 9 zm = 9 zs = 1 f = 5 IDAT size = 1116893 Selecting parameters: zc = 9 zm = 9 zs = 1 f = 5 IDAT size = 1116893 Output IDAT size = 1116893 bytes (90127 bytes decrease) Output file size = 1117024 bytes (91891 bytes = 7.60% decrease) ** Processing: default-1920x1080.png 1920x1080 pixels, 4x8 bits/pixel, RGB+alpha in opng_reduce_image_type in opng_validate_image in opng_reduce_bits in opng_analyze_bits Input IDAT size = 1283688 bytes Input file size = 1285691 bytes Trying: zc = 9 zm = 9 zs = 1 f = 5 IDAT size = 1188146 Selecting parameters: zc = 9 zm = 9 zs = 1 f = 5 IDAT size = 1188146 Output IDAT size = 1188146 bytes (95542 bytes decrease) Output file size = 1188277 bytes (97414 bytes = 7.58% decrease) ** Processing: default-1920x1200.png 1920x1200 pixels, 4x8 bits/pixel, RGB+alpha in opng_reduce_image_type in opng_validate_image in opng_reduce_bits in opng_analyze_bits Input IDAT size = 1396128 bytes Input file size = 1398299 bytes Trying: zc = 9 zm = 9 zs = 1 f = 5 IDAT size = 1292859 Selecting parameters: zc = 9 zm = 9 zs = 1 f = 5 IDAT size = 1292859 Output IDAT size = 1292859 bytes (103269 bytes decrease) Output file size = 1292990 bytes (105309 bytes = 7.53% decrease) real 0m54.617s user 0m54.551s sys 0m0.008s So png wins -- Bruno Friedmann Ioda-Net Sàrl www.ioda-net.ch openSUSE Member & Ambassador GPG KEY : D5C9B751C4653227 irc: tigerfoot -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org