Summary

以下の6つのサイトを使って，CSS圧縮サービスのIcey Compressor, Clean CSS[2006-06-19-17], CSS Optimiser, Flumpcakesを比較．

Digg.com
Slashdot
Filmsy
iBegin
Download.com
ESPN

結果

Site	CSS Optimiser	Icey Compressor	Flumpcakes	Clean CSS
Digg.com	failed	failed	failed	16.8%
Slashdot	17.45%	51.21%	9%	21.9%
Filmsy	18.85%	47.08%	17%	29.1%
iBegin	failed	55.95%	failed	failed
Download.com	failed	45.49%	0%	27.9%
ESPN	failed	69.84%	failed	27.9%
Average:	18.15%	53.91%	8.67%	24.18%

順位

1. Icey Compressor
2. Clean CSS
3. CSS Optimiser
4. Flumpcakes

重要なポイント

・圧縮率の高さ
・再現性の高さ

整形・圧縮をかけた結果，元の表示と違ってしまうというケースが多いようだ．

Reference

Blogging Pro - 20006-08-17 - CSS Optimization: Make Your Sites Load Faster for Free-
http://www.bloggingpro.com/archives/2006/08/17/css-optimization/

Icey - Projects - CSS Compressor
http://iceyboard.no-ip.org/projects/css_compressor

Clean CSS
http://www.cleancss.com/

Online CSS Optimizer / Optimiser
http://www.cssoptimiser.com/

flumpCakes - Online CSS Optimiser/Optimizer
http://flumpcakes.co.uk/css/optimiser/

CSS Formatter and Optimiser/Optimizer (based on CSSTidy 1.2)
http://www.cdburnerxp.se/cssparse/css_optimiser.php

CSS Tweak
http://www.cssdev.com/csstweak/

Factor CSS
http://zamez.org/factorcss

via

秋元@サイボウズ研究所プログラマーBlog: CSSの圧縮サービス比較記事
http://labs.cybozu.co.jp/blog/akky/archives/2006/08/css_optimization.html