JPG to PDF Free: Turn JPEG Photos into a PDF

What actually happens to your JPEGs

Three facts most converters gloss over. First, EXIF orientation is auto-applied: phones store rotation as a tag (orientation 6 = rotate 90°) and browsers decode "from image", so sideways phone photos land upright on the page. Second, JPEGs here are embedded byte-for-byte (embedJpg) — the exact bytes you dropped are copied in. Nothing is decoded, re-compressed or generation-loss'd; what was shot is what ships. Third, the white surround on A4/Letter absorbs the ~5 mm no-print zone every physical printer has.

That honesty cuts both ways: embedding never re-encodes, so the PDF is as big as the JPEGs inside it plus a few hundred bytes of page structure. Ten 6 MB phone photos make a 60 MB PDF — no compression, no apology. To hit a cap, compress the photos first, then build the PDF.

• EXIF orientation honored — upright pages from sideways phone bytes, no manual rotating
• Byte-copy embedding — zero generational quality loss, output tracks input sizes
• A4/Letter center the photo with white margins; Fit-to-image sizes the page to your pixels at the chosen DPI (72 default)
• Margins absorb the printer's ~5 mm dead zone; Fit-mode edge-to-edge can still clip on real hardware
• Order = drop order; big batches are fine — device memory is the limit, and hundreds of photos work

Purist caveat: PNGs pdf-lib can't embed directly get one re-encode through the canvas — not byte-pure. JPEGs always are.