ebookbookFormats & Files on PDF
Which file types actually open, how conversion works, and where DRM changes the rules.
PDF will open its own store books without a format lecture. The lecture starts when a file arrives from email, USB, Calibre, or another shop.
This section covers what actually opens, when conversion is worth the mess, and how DRM changes the answer. Typical inputs: PDF, sometimes with OCR text layers or PDF/UA tags.
Some academic PDFs use Adobe DRM or watermarking. Many PDFs are just files.
Which file types open in PDFA practical list of formats PDF will open, what gets converted on the way in, and what still fails.Converting books for PDF without breaking layoutWhen conversion is necessary for PDF, what survives, and which source formats you should leave alone.DRM and personal copies in PDFThe difference between a store license and a file you own, written for people using PDF.