Talacia Software has released
Site Soap, a Mac OS X application that optimizes Web pages, style sheets and image files for fast loading without reducing quality. It costs US$12.95 and requires Mac OS X v10.4 “Tiger.”
Site Soap lets you drag and drop files onto the file list; you then choose options and optimize. It uses a batch interface, so you can perform the same action on many files. Site Soap then provides you with feedback about how well your files were optimized and how much space you’ve saved. It also provides backups so your originals are preserved.