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why do pdfs with images look like this? (lemmy.ml)
submitted 3 weeks ago by to c/piracy@lemmy.ml
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i've been getting quite a few pdfs from annas archive that have lots of photographs that look all filled with jpg artifacts or something. most of these i think were originally uploaded to the internet archive. is there any way to correct this or am i stuck between not reading the book or having to read it looking like this?

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[–] 2 points 3 weeks ago

They have lots of jpg artefacts because they are heavily compressed jpgs. Nothing you can do about it except finding the uncompressed original, which would have a much larger filesize.

As far as I recall all pixel images in PDFs are jpgs. So they will all have varying degrees of artefacts.

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