On 03/23/2012 09:20 PM, Liam R E Quin wrote:

every time you load and
save a JPEG file the quality is reduced and information is lost.
Not true... if nothing changes the algorithm is stable (decoded values get re-encoded to the same values). You lose quality if you recompute something different; changed settings, changed pixel values, changed 8x8 boundaries (image crop).
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