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Can a PDF file contain a PDF file, and if so can that PDF file contain a PDF file?

• betatim 6y ago
  Yes. Because the PDF standard specifies a mechanism that lets you "attach" files to a PDF :)
  • brailsafe 6y ago
    I worked for PDFTron on their WebViewer product earlier this year, and primarily spent time implementing this feature in JS. Understanding the spec on this was tricky, because standard PDF viewers need to be able to uncompress the stuff you jam in there. It kind of blew my mind that you can literally jam any arbitrary file into a PDF.
• layoutIfNeeded 6y ago
  ZIP files can: https://research.swtch.com/zip https://research.swtch.com/zip
• brailsafe 6y ago
  Yes.
• folmar 6y ago
  My stupid bank sends encrypted attachments as an encrypted PDF with HTML file attached.