How to convert an image to PDF on iPhone

Your phone is full of pictures that really need to be PDFs. A photo of a receipt. A screenshot of an order. A signed page you snapped on the kitchen table. The form asks for one PDF and you have five pictures.

This guide shows how to turn them into a single file on your iPhone. It also explains the HEIC photo format your iPhone uses, and when a scan is a better choice than a plain conversion.

How do I convert an image to PDF on my iPhone?

Open Image to PDF in your phone's browser, add the pictures, put them in order and download. The PDF is built in your browser, so your pictures are not sent anywhere.

1. Open Image to PDF and choose your pictures from your phone. Take a photo opens your camera if you want to shoot a new one.
2. Add every picture you need in one go. JPG, PNG, WebP, GIF, BMP, TIFF and HEIC all work, and you can mix them.
3. Drag the pictures into order. The first one becomes page one.
4. Choose the page size: Fit to image, A4 or US Letter. For A4 and Letter, pick portrait, landscape or automatic, and a margin of none, small or large.
5. Download your PDF, open it and scroll through every page. Your original pictures are not changed.

Do HEIC photos from my iPhone work?

Yes. HEIC is the photo format recent iPhones use by default, and it often fails to open in other programs. On an iPhone or iPad, any browser can open HEIC. The photo is read on your phone and saved in the PDF as a high-quality JPEG. Photo orientation is respected.

If you only have iPhone photos, HEIC to PDF is the same job on a page that checks your browser first. For JPG files, see JPG to PDF.

How do I convert a screenshot to PDF?

Add the screenshot to Image to PDF like any other picture, and choose Fit to image so the page takes the shape of the screenshot. A long screenshot becomes one tall page. If you copied the screenshot, Screenshot to PDF accepts a paste.

Which page size should I pick?

• Fit to image: each page is the shape of its picture. Nothing is cropped or padded. It suits receipts and screenshots.
• A4 or US Letter: every page is the same standard size, with a margin you choose. It suits a packet someone may print.
• Automatic orientation: the tool picks portrait or landscape for each page.

A short checklist

• Add every picture, and check the count in the list.
• Put them in order and choose a page size.
• Open the finished PDF and scroll through every page, looking for a sideways or cut-off picture.
• Keep your original photos.

Should I convert the picture or scan the page?

Convert when the picture is already what you want. Scan when it is a photo of paper. Image to PDF puts a picture on a page as it is. It does not straighten a slanted photo or clean up the paper.

Scan to PDF lets you drag four corners onto the sheet, cuts out the page and straightens it, and offers Original, Grey or Black and white. Either way the page is a picture, so the words cannot be searched or copied until you run OCR PDF.

A worked example

Alex freelances and needs to send a client proof of an expense. He has an iPhone photo of a receipt (HEIC), a screenshot of a payment page (PNG) and a photo of a signed page. He adds all three, drags the signed page to the top, picks US Letter with a small margin and downloads one three-page PDF.

Common problems and fixes

• A picture is sideways. Turn the finished PDF page with Rotate PDF, or rotate the photo before you add it.
• The pictures are in the wrong order. Drag them before you download, or fix the file with Organize PDF.
• The PDF is too big to send. Use Compress PDF.
• A GIF shows one frame. A PDF page cannot move, so only the first frame is kept.
• You need the pictures as a PDF with a signature. Add the signature after, with Sign PDF.

Where do your pictures go?

Photos of receipts, IDs and signed pages are private. Image to PDF opens your pictures and builds the PDF in your browser tab, so they are not sent to our servers. Keep your original pictures too.

2 free uses in total, no account needed. Free files can be up to 50 MB, and Pro allows up to 500 MB. For more types and the full list of fixes, read the general guide, how to convert an image to PDF.

Sources

• PDFinish's own Image to PDF, HEIC to PDF and Scan to PDF pages, for the picture types, HEIC handling, page sizes, scan steps and limits, as of November 2026.