wrhi


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Currently the largest image used is been 6000 pixels wide. The WikiReader should be able to handle a million pixels wide, but the limiting factor is the python distill script for converting the image format. The format is optimized for simple decoding. It uses no compression to speak of, other than what is provided by quad trees. Compared to PNG, photos are roughly twice as large where as line drawings are a bit smaller. The WRHI file also contains a pre-rendered pyramid of zooms, and it is pretty remarkable that something so simple with all that extra data embedded could even come close to PNG.

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