Meaning of "Lossless Compression"

Started Aug 21, 2013 | Questions thread
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Gerry Pasternack Veteran Member • Posts: 3,663
Meaning of "Lossless Compression"

When a photo editor states that its operation results in "lossless compression"  I would expect that the MP size of its output will be approximately equal to the MP size of its input.

How does this relate image size in MB?  Can the output MB size be less that the input and still have lossless compression?

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