HEIC To PDF accepts only a single HEIC or HEIF file per conversion, matching a one-photo mobile browser workflow.
Adobe describes converting HEIC to PDF on an iPhone as opening Photos and launching the app to begin the workflow. How to convert HEIC to PDF: 5 easy steps | Adobe Acrobat
HEIC To PDFConvert A HEIC Photo Into A PDF Right From Your iPhone
Open Safari and navigate to the HEIC To PDF tool.
Tap the upload area to select your HEIC photo from the camera roll.
HEIC To PDF checks that the selected file has a .heic or .heif extension before starting conversion.
Watch the tab until the upload finishes.
Download the finished PDF to your device.
Verify the PDF and Reset for Another Photo
Open the downloaded PDF in the Files app to review the image.
Tapping the reset control on iPhone clears the loaded photo instantly, with no browser refresh, leaving the page ready for the next HEIC.
Tap the start-over button to clear the current file and upload a new HEIC image.
Continue with Why HEIC photos won't open on Windows or HEIC to PDF preserving orientation.
Frequently Asked Questions about Convert HEIC to PDF on iPhone
How do I start the conversion on my iPhone?
Open the HEIC To PDF tool in your iPhone's browser to begin.
Where do I select the HEIC file?
Choose the HEIC photo from your iPhone's camera roll in the upload prompt.
How do I get the PDF file?
Save the converted PDF to the Files app on your iPhone.
How do I convert another photo?
Click the reset control to clear the current file before uploading a new photo.