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Optimizer is a program which can help you to achieve as high lossy compression as is visually acceptable. Input files are in jpg, png or pnm formats and output can be jpeg, jp2 (JPEG 2000) or djvu/c44 (DJVU). After opening the file you can adjust quality using horizontal slidebar named quality. Radiobuttons on the top select output format, you must have jasper executable in path ( http://www.ece.uvic.ca/~mdadams/jasper/ ) if you want Jpeg 2000 support and djvulibre ( http://djvu.sourceforge.net/ ) if you want c44/djvu support in this program. If optimizer can't find jasper or c44 executable, appropriate radiobuttons are inactive. Output files after pressing save button are in the same directory as input files but have changed extension (jpg, jp2, djvu). Be aware of the fact that if input file is jpeg, it will be overwritten by the "optimised" version. In principle this program is a shell which executes several external programs, so if anything go wrong you should see this on a console. Good luck !

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