In more detail
Rotating by multiples of 90° is lossless in principle, but many tools recompress on save. Splitting an image into tiles and arranging several into a collage are the same operations in reverse.
Cropping, rotating and flipping change an image's framing and orientation without altering the colours of its pixels.
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Rotating by multiples of 90° is lossless in principle, but many tools recompress on save. Splitting an image into tiles and arranging several into a collage are the same operations in reverse.