Most forms that ask for "a scanned copy" will accept a photograph, as long as it arrives as a PDF. The conversion itself is trivial. What actually causes rejected uploads is page order, page size, and the format iPhones quietly save photos in.
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JPG to PDF ConverterThe part iPhone users hit first: HEIC
Since iOS 11, iPhones save photos as HEIC rather than JPG by default. It is a better format - roughly half the size for the same quality - but many Windows applications, printers and government portals cannot open it at all.
You do not need to change your camera settings or convert on the phone. Upload the HEIC files as they come off the device and let the converter handle it. If you would rather stop producing HEIC entirely, the setting is under Settings, Camera, Formats, Most Compatible.
Getting the page order right
This is where most people lose time. Files do not always upload in the order you selected them - browsers sort by filename, and "IMG_2.jpg" sorts after "IMG_10.jpg" in most sorting rules.
- 1Add every image before you start worrying about order.
- 2Check the numbered list against your document. Page one of the form should be first in the list.
- 3Drag any row by its handle to move it. The list order is exactly the page order in the finished PDF.
- 4Only then press convert.
If you are working with dozens of photos, the grid view in the Multiple Images to PDF tool is far easier to reorder than a long list.
Choosing a page size
A4 or Letter puts each photo onto a standard sheet, which is what you want for anything that will be printed or checked by a human against a paper form. Original keeps each page shaped exactly like its photo, which suits screenshots and ID cards where a standard sheet would leave odd white bands.
If your photos are a mix of portrait and landscape, the auto orientation setting gives each page the shape that suits its own image rather than rotating everything to match.
Photographing a document so it converts well
Lay the page flat, fill the frame with it, and shoot in even light with no shadow across the paper. Avoid angling the camera - a trapezoid page is obvious in a PDF and some portals reject it.
If the result still looks like a photo rather than a scan, run it through the scan tool instead, which crops the background, lifts contrast and can convert to clean black and white.
Frequently asked questions
Can I combine JPG and PNG files in the same PDF?
Yes - use the Image to PDF tool, which accepts every common format at once. The JPG to PDF tool is deliberately restricted to JPG so the file picker filters cleanly.
Will converting reduce my photo quality?
Images are embedded at high quality by default. Very large photos are scaled down slightly so the PDF stays a sensible size, and you can raise or lower that in the quality setting.
How many photos can go into one PDF?
Up to 100 images per document, with a 100MB limit per file.
Tools mentioned in this guide
Convert iPhone HEIC photos to PDF without installing any app.
Combine up to 100 images into one PDF with drag-and-drop ordering.
Turn mobile photos of paper documents into clean scanned PDFs.
Last updated 21 January 2026. Back to all guides