OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. The program also converts external formats (BMP, GIF, PNM and uncompressed TIFF) to optimized PNG, and performs PNG integrity checks and corrections.
OptiPNG 0.6.3 is a maintenance release that contains important fixes, including a security fix. Check out the HISTORY document for more information.
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