Since iOS 11, iPhones save photos in HEIC (High Efficiency Image Container). It halves file size compared to JPG — but Windows, older Android devices and many web apps cannot open it. Converting to PDF solves this instantly.
Why HEIC causes problems
HEIC is patented and not universally licensed, so support outside Apple's ecosystem is inconsistent. A PDF, on the other hand, opens everywhere — from a 10-year-old office PC to any smartphone.
Convert HEIC to PDF online
- Go to the HEIC to PDF converter.
- Upload your HEIC photos straight from your iPhone or computer.
- Arrange the order, pick a page size, then hit Convert to PDF.
Tip: stop your iPhone from using HEIC
If you prefer JPG by default: Settings → Camera → Formats → Most Compatible. Note this roughly doubles photo file sizes.
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