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Image saved as PDF is larger than image saved as JPG
Can anyone tell me why the same image saved as a PDF is larger in file size than that same image saved as JPG?
Does Acrobat have some extra settings or baggage that it adds?
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There's a 1000+ page technical document that explains all of it, if you're interested...
But seriously, that's an extremely complicated issue. Suffice it to say that a PDF will contain metadata information, page information, images information, text streams information, fonts information, color space information, printing information, fields/comments/links/bookmarks information, etc., etc. While not all of that is necessarily present in your specific file, it can be, so a PDF with an image will almost always be larger than just the image itself, unless it was down-sampled while creating it, in which case it could be smaller (but the image will have a lower quality).
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