CentOS 7 Beta Branch add YUM package pngquant for .08 beta

add YUM package pngquant for .08 beta

Continue reading...

---

123.08centos7beta02 branch

• Branch: https://github.com/centminmod/centminmod/tree/123.08centos7beta02
• Commit History: https://github.com/centminmod/centminmod/commits/123.08centos7beta02

 

well you forget that I also add stuff to Centmin Mod that I personally use often too

but yeah it can be used for Wordpress or just for general use

 

it's a tool like siege bench, only when it's run manually will it use resources

it's not a service

see Overview of PNG optimization tools for a run down of pngquant and other tools like it

 

example running tools against .08 beta 02's default /usr/local/nginx/html/nginx-logo.png

Code:

ls -la
total 84
drwxr-xr-x 2 root  root   4096 May 23 15:01 .
drwxr-xr-x 6 nginx nginx  4096 May 23 14:33 ..
-rw-r--r-- 1 root  root   8163 May 23 14:46 nginx-logo-fs8.png
-rw-r--r-- 1 root  root  11908 May 23 15:01 nginx-logo-lossyt-8bit-m.png
-rw-r--r-- 1 root  root  11914 May 23 15:00 nginx-logo-lossyt-8bit.png
-rw-r--r-- 1 root  root  11914 May 23 14:59 nginx-logo-lossyt.png
-rw-r--r-- 1 root  root  12974 May 23 15:01 nginx-logo-optipng.png
-rw-r--r-- 1 root  root  15382 May 23 14:33 nginx-logo.png

Code:

pngquant -v --speed 1 nginx-logo.png
zopflipng -m --lossy_8bit --lossy_transparent nginx-logo.png nginx-logo-lossyt-8bit-m.png
zopflipng --lossy_8bit --lossy_transparent nginx-logo.png nginx-logo-lossyt-8bit.png
zopflipng --lossy_transparent nginx-logo.png nginx-logo-lossyt.png
optipng -o7 nginx-logo.png --out nginx-logo-optipng.png

Code:

pngquant -v --speed 1 nginx-logo.png
nginx-logo.png:
  read 16KB file
  made histogram...1350 colors found
  selecting colors...3%
  selecting colors...15%
  selecting colors...18%
  selecting colors...20%
  selecting colors...22%
  selecting colors...35%
  selecting colors...47%
  selecting colors...60%
  selecting colors...73%
  selecting colors...86%
  selecting colors...98%
  selecting colors...100%
  moving colormap towards local minimum
  eliminated opaque tRNS-chunk entries...0 entries transparent
  mapped image to new colors...MSE=1.176 (Q=95)
  writing 256-color image as nginx-logo-fs8.png
No errors detected while quantizing 1 image.

Code:

zopflipng -m --lossy_8bit --lossy_transparent nginx-logo.png nginx-logo-lossyt-8bit-m.png
Optimizing nginx-logo.png
Filter strategy minimum sum: 11908 bytes
Result is smaller
Input size: 15382 (15K)
Result size: 11908 (11K). Percentage of original: 77.415%

Code:

optipng -o7 nginx-logo.png --out nginx-logo-optipng.png         
OptiPNG 0.6.4: Advanced PNG optimizer.
Copyright (C) 2001-2010 Cosmin Truta.

** Processing: nginx-logo.png
350x90 pixels, 4x8 bits/pixel, RGB+alpha
Reducing image to 3x8 bits/pixel, RGB
Input IDAT size = 15239 bytes
Input file size = 15382 bytes

Trying:
  zc = 9  zm = 9  zs = 0  f = 4         IDAT size = 12970
  zc = 9  zm = 8  zs = 0  f = 4         IDAT size = 12970
  zc = 9  zm = 9  zs = 0  f = 5         IDAT size = 12844
  zc = 9  zm = 8  zs = 0  f = 5         IDAT size = 12844
                              
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 5         IDAT size = 12844

Output file: nginx-logo-optipng.png

Output IDAT size = 12844 bytes (2395 bytes decrease)
Output file size = 12974 bytes (2408 bytes = 15.65% decrease)