Why convert JPG photos to PDF
JPG is the format your phone camera uses for almost every photo, including photos of certificates, bills, ID cards and handwritten notes. Offices and websites, however, usually want documents as PDF. Converting the JPG photos turns them into a proper document that can be printed, attached and stored with other paperwork.
What happens when you convert
Your JPG files are placed into the PDF exactly as they are — the photo data is copied directly, without compressing it a second time — so the picture quality in the PDF is the same as your original photo. Each photo becomes one page. “Fit to image” makes each page exactly the size of its photo; A4 or US Letter puts the photo in the centre of a standard page with a small margin, turning wide photos into landscape pages.
Which photos work best
Photos taken in daylight, straight from above, with the document filling most of the frame are easiest to read. Avoid shadows from your hand or phone, and hold the camera steady. If the original photo is blurry, the PDF will be blurry too, because the tool does not change the photo.
Common problems and how to fix them
The PDF is too big for an upload: phone photos are often 2–5 MB each, so use Compress PDF or Image to PDF Under 100KB. Photos appear in the wrong order: drag them in the list first. A .jfif or .jpeg file: these are the same format as JPG and are accepted. The page looks dark: brighten the photo with Adjust Image Brightness before converting.
Good habits
Choose “Combine into one PDF” when the photos belong to one document, keep your original photos, and zoom into the PDF to check small print before submitting it.