JPG to PDF puts your photos into a PDF document, one photo per page. It is the usual way to send several scanned receipts, ID cards, signed forms or handwritten notes as a single file, or to meet an upload portal that only accepts PDF. Add up to 100 images, put them in order with the arrows, and the page preview shows exactly how each page will look.
Choose the page size: Fit to image (each page takes the photo's shape, with no white border), A4 or US Letter. For A4 and Letter, orientation can follow each photo automatically or be fixed to portrait or landscape, and you can add a margin of 6, 12 or 20 mm. With Original quality, real JPG files go into the PDF byte for byte, with no recompression, so nothing is lost. iPhone HEIC photos and WebP images are accepted too and are stored as high-quality JPEG. Phone photos saved sideways with a rotation tag are turned upright first, because PDF viewers ignore that tag. You can make one combined PDF or one PDF per image, downloaded as a ZIP.
Limits: the PDF contains pictures, so the text in a photographed document can't be searched or selected until you run OCR on it. The PDF is roughly as large as the photos you add; choose Smaller file (JPEG, at most 2000 px on the long side) for email attachments and upload limits.