iPhones and iPads save photos as HEIC by default, a format that keeps quality high at roughly half the size of JPG. The catch is compatibility: many Windows programs, upload portals and older devices can't open HEIC at all. HEIC to PDF converts those photos into a PDF that works everywhere, which is especially handy when the photos are of documents you need to send.
How to use HEIC to PDF
- Add one or more HEIC or HEIF photos.
- Drag them into the order you want.
- Select Convert to PDF.
- Download the PDF and check that every photo appears upright.
How HEIC photos are converted
- Decoded and re-encoded: HEIC uses a modern compression method that PDF files can't store directly, so each photo is decoded and saved as a high-quality JPEG inside the PDF. At that quality the difference isn't visible in normal viewing.
- Orientation is applied: The photo's orientation data is applied first, so pictures taken in portrait appear upright.
- If the decoder is missing: Conversion needs the HEIC decoder installed on the server. If it's missing, VelloDoc says so plainly instead of claiming your photo is damaged.
Avoiding HEIC in the first place
- Switch the camera format: If you often send photos to people or systems that can't read HEIC, your iPhone can take photos in a more common format. In Settings, open Camera, then Formats, and choose Most Compatible to save new photos as JPG.
- Sharing converts automatically: An iPhone also converts photos automatically when sharing to many apps.
- For photos you already have: For photos you have already taken, converting to PDF is the simplest way to deliver several of them as one file.
Documents photographed on an iPhone
- Many are really documents: Many HEIC photos are really documents: receipts, forms, whiteboards and letters.
- Make them searchable: After converting, OCR PDF can make their text searchable, and Compress PDF brings a large set of photos down to email size.
- To capture new pages, Scan to PDF opens the camera straight from the browser, and the guide to cleaner phone scans explains how to photograph pages well.
When people use HEIC to PDF
Sending iPhone photos to Windows users
Share photos with colleagues whose computers can't open HEIC, as one PDF that needs no extra software.
Uploading to strict portals
Many application and claims portals reject HEIC. Convert the photos so the upload is accepted the first time.
Photographed receipts and forms
Turn document photos taken on an iPhone into a single PDF ready for an expense claim or records.
Limitations to know
HEIC to PDF re-encodes photos as JPEG inside the PDF, so the file is usually larger than the originals, and the video part of Live Photos isn't included. It requires the pillow-heif package on the server and doesn't crop, enhance or read text in photos.
HEIC to PDF: common questions
Why can't I open HEIC files on Windows?
Windows needs an extra codec to display HEIC, and many programs and websites don't support it at all. A PDF made from the photos opens without any add-ons.
Is quality lost in the conversion?
Photos are saved as high-quality JPEG inside the PDF, because PDF can't hold HEIC data. The change isn't noticeable in normal viewing, although the PDF is usually larger than the original HEIC files.
Do Live Photos work?
Yes, the still photo is converted. The short video that makes a Live Photo move is stored separately and isn't included.
What if the server says HEIC support isn't installed?
HEIC decoding relies on the pillow-heif package. If a server lacks it, the tool reports that clearly. You can export the photos as JPG on your phone and use JPG to PDF instead.