Extract the images from PDF and if you are lucky, their metadata would have been retained*. Then use Image::ExifTool to see image metadata, possibly in-memory.

*) The PDF creator (e.g. a word-processor) might try to be clever and ask user to apply compression on input images which may filter out metadata or enable user to filter out metadata themselves.

In reply to Re: [OT:] Properties of images in pdf by bliako
in thread [OT:] Properties of images in pdf by Anonymous Monk

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