PDF (Portable Document Format) is an electronic document format developed by Adobe in 1993. It preserves layout regardless of OS or device, making it the global standard for business documents. For QR codes, PDF is the most common format for distributing documents with embedded codes: invoices, event tickets, product manuals, and business cards.
The key consideration when embedding QR codes in PDFs is image format. PDF natively supports vector graphics, so embedding QR codes as SVG or vector paths maintains sharpness at any scale. Raster images (PNG) risk blurred module boundaries at print resolution. Ensure at least 300 dpi or use vector format.
For batch-generating PDFs with unique QR codes (per-invoice numbers, serialized tickets), programmatic generation is efficient. Libraries like Python's reportlab, JavaScript's pdf-lib, and Java's iText can be combined with QR code generators for automation. Note: PDF417 is an unrelated stacked barcode standard, not a PDF file format.