How it works
Each image is placed on its own page, scaled to fit inside the margins without cropping or stretching, and centred. JPG photos are embedded as they are, with no recompression, so quality is unchanged. PNG keeps its exact pixels; WebP and HEIC are converted to PNG first. The PDF is built in your browser with pdf-lib.
A4 = 595.28 × 841.89 pt · Letter = 612 × 792 pt · 1 in = 72 pt = 25.4 mm
Tips
- Pick A4 or Letter if the PDF will be printed or submitted; Same as image keeps each page exactly the size of the photo.
- Automatic orientation turns pages to landscape for wide images, so they fill the page.
- Scanning documents with a phone? Crop them first so the page edges disappear.
- Very large photos make large PDFs. Shrink them with the image compressor first if the file must be small.
Standards and sources
Last reviewed October 15, 2026
Frequently asked questions
How do I combine several JPGs into one PDF?
Add all the images at once, put them in order with the ↑ ↓ buttons, choose a page size and press Create PDF. Each image becomes one page.
Does the PDF lose image quality?
No for JPG: the original JPG data is placed in the PDF unchanged. PNG is lossless too. Only WebP and HEIC are converted, to lossless PNG.
Can I make an A4 PDF from phone photos?
Yes. Choose A4 and Automatic orientation. Each photo is scaled to fit the page inside the margin you set, without cropping.
Are my images uploaded?
No. The PDF is created on your device. Only the pdf-lib library is downloaded the first time you use the tool.