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How to convert JPG images to a PDF

A receipt, a signed form photographed page by page, a stack of scanned certificates: images are easy to capture and awkward to send. A single PDF arrives as one document, in the right order, and opens the same way everywhere. This guide covers converting JPG images to a PDF, choosing a page size, and handling PNG screenshots and iPhone photos.

Updated September 15, 20265 min read

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  1. 01Why send a PDF instead of the images
  2. 02How to convert JPG to PDF, step by step
  3. 03Choosing a page size
  4. 04Will the photos lose quality?
  5. 05PNG screenshots and iPhone photos

Why send a PDF instead of the images

Sixteen photos in an email arrive as sixteen attachments that the recipient has to open one by one and put in order, and phone galleries often sort by date rather than by the order you meant. A PDF keeps the pages together and in sequence, prints predictably and is what most upload forms ask for.

How to convert JPG to PDF, step by step

One image is enough; you can also add a whole folder at once. The images are not uploaded to convert them.

  1. Open JPG to PDF and add your photos or scans. JPG, JPEG and PNG files are all accepted.
  2. Arrange them in the order you want the pages to appear.
  3. Choose the page size: keep each image’s own proportions, or put every page on A4 or Letter.
  4. Run the tool and download the PDF, with one image per page in the order you set.

Choosing a page size

Keeping the image proportions is best for a document that will be read on a screen: each page matches its picture exactly, with no borders and nothing cropped.

A4 or Letter is the better choice when the PDF will be printed or filed. Printers and document systems expect one predictable page size, and a page with unusual dimensions gets scaled or cropped by the print driver.

Will the photos lose quality?

Images are only processed as far as placing them on a page requires; there is no extra quality pass. A sharp photo stays a sharp photo. If the resulting PDF is too large to send, run Compress PDF afterwards and choose your own target size, so you decide how much quality to trade.

PNG screenshots and iPhone photos

Not every image is a JPG. PNG images and iPhone photos also have dedicated tools of their own.

  • PNG to PDF keeps transparency as far as PDF allows, which suits screenshots, diagrams and scanned documents saved as PNG.
  • HEIC to PDF handles iPhone photos. It relies on the system HEIC decoder, which Safari on a Mac, iPhone or iPad has; if the current browser cannot decode HEIC, the page says so before anything happens.

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Frequently asked questions

Yes. A single image is accepted on purpose, because turning one receipt or one certificate into a PDF is the most common reason people use the tool.

Convert first, then open Compress PDF and type the size you are aiming for. Compression lowers image quality only as far as it needs to reach that target.

Yes. JPG to PDF accepts PNG images as well, so add both and arrange them in the order you want. For a set of PNG screenshots or diagrams on their own, PNG to PDF is the dedicated tool.

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