How to Combine Photos into a Single PDF

Expense receipts, a multi-page form photographed one sheet at a time, certificates for an application, photos of damage for an insurance claim — all situations where a single PDF is far more useful than a dozen loose image attachments.

Why one PDF beats several images

• Order is preserved. Attachments arrive in whatever sequence the mail client decides. A PDF has pages.
• One file to handle. Easier to name, file, forward and archive.
• It looks considered. For anything going to an employer, insurer or accountant, this matters more than it should.
• Upload forms accept it. Many portals take one file only.

Prepare the images first

The order you do things in saves rework:

• iPhone photos need converting. HEIC is not universally supported — run them through HEIC to JPG first.
• Check orientation before combining. Rotating an image is easier than rotating a PDF page afterwards, though Organize PDF handles it either way.
• Crop out the surroundings. A receipt photographed on a desk looks much better cropped to the receipt.
• Name them in order. Zero-pad numbers — 01, 02, 10 — because 10 sorts before 2 alphabetically. This single detail causes most ordering mistakes.

Combining them

Select the images in the order you want them and Image to PDF places each on its own page at its original resolution, with no re-encoding.

Open the result and check it before sending. Page order and orientation problems are obvious once you look and invisible if you do not.

Making it searchable

The resulting PDF contains pictures, not text — you cannot search it or copy from it. For receipts and certificates that is usually fine.

If you need to find these documents later by their contents, run the PDF through OCR PDF. It adds an invisible text layer behind the images, so the document looks identical but becomes searchable. For an archive of receipts, this is the difference between a useful filing system and a pile.

Keeping the size sensible

Modern phone photos are large. Twelve of them in one PDF can easily exceed an email limit.

Compress PDF solves this, and for photographed documents the savings are usually dramatic with no meaningful loss of legibility. Compress once at the end rather than shrinking each photo first — you will get a better result from a single pass.

A privacy note on receipts and claims

These documents are more revealing than they look. Receipts show where you were and when. Insurance photos show the inside of your home. Certificates carry your full name and date of birth.

Every tool mentioned here processes files entirely within your browser, so none of that is transmitted anywhere.