On Tue, Dec 3, 2019 at 10:59 AM Paul Berger via cctalk <
cctalk at classiccmp.org> wrote:
Is there any way to know what compression was used in
a pdf file?
There's not necessarily only one. Every object in a PDF file can have its
own selection of compression algorithm.
I don't know of any user-friendly way to tell. Years ago I used some really
awful programs I hacked up to inspect PDF file contents. I'm not sure I
even can find them any more.