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pdfimages -list <file>
readspage num type width height color comp bpc enc interp object ID x-ppi y-ppi size ratio
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1 0 image 1568 2489 icc 3 8 jpeg no 170 0 300 300 306K 2.7%
3 1 image 1550 2437 icc 3 8 jpeg no 13 0 300 300 592K 5.4%
4 2 image 1550 2435 icc 3 8 image no 17 0 300 300 2479K 22%
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