original (no recompression) vs JPEG 2000 vs standard JPEG

Ziproxy supports both JPEG and JPEG 2000 output.
JPEG is the fastest to compress to, JPEG 2000 is significantly heavier to process.
JPEG is supported by any graphical browser, JPEG 2000 require either a browser with such support (such as Konqueror), a browser with a JPEG 2000 plug-in or an addicional instance of Ziproxy running at the client's side.

original	recompressed to JPEG 2000	recompressed to (standard) JPEG
pre-resized and saved with 85% JPEG quality	20% JPEG 2000 quality (recomp. to JPEG in order to be viewable)	22% standard JPEG quality
10760 bytes 1.0x (no acceleration)	3075 bytes * ~3.5x acceleration	3082 bytes * ~3.5x acceleration

this picture is copyrighted by Mila Zinkova and distributable under the GNU FDL

original	recompressed to JPEG 2000	recompressed to (standard) JPEG
pre-resized and saved with 85% JPEG quality	20% JPEG 2000 quality (recomp. to JPEG in order to be viewable)	22% standard JPEG quality
5416 bytes 1.0x (no acceleration)	1808 bytes * ~3.0x acceleration	1706 bytes * ~3.18x acceleration

this picture is copyrighted by Mila Zinkova and distributable under the GNU FDL


* - Bigger pictures tend to compress more, smaller ones, less.