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> For example you can't really compress a JPEG You can compress (or rather, optimize) an existing JPEG if the Huffman tables were suboptimal (which they often
by cornstalks 8y ago
> For example you can't really compress a JPEG
You can compress (or rather, optimize) an existing JPEG if the Huffman tables were suboptimal (which they often are). It usually gives a few percentage points of decreased file size.
You can also drop metadata (e.g. EXIF) in many circumstances, which saves a bit more.