Re: [dev] Looking for simple, alpha supporting image format

From: Norman Köhring <koehr_AT_mailbox.org>
Date: Thu, 17 Jul 2014 14:24:00 +0200 (CEST)

> FRIGN <dev_AT_frign.de> hat am 17. Juli 2014 um 11:13 geschrieben:
> I suppose LZMA will give even better results.

Not so much. I tried it with an image, which should be quite nice to compress
(quite uniform, dark colours). Here for you to compare:

632K image.png
5.5M image.simpleimageformat

607K image.lzma /* lzma --best --extreme … */
608K image.xz /* xz --best --extreme … */
931K image.gz /* gzip --best … */
578K image.bz2 /* bzip2 --best … */
1.1M image.lz4 /* lz4 -9 … */


Last one is super fast in compression. bzip2 feels quite slow already. XZ and
LZMA are super slow. All are fast in decompression.

(No real mesurements taken.)
Received on Thu Jul 17 2014 - 14:24:00 CEST

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