1. Add HEIC support to Microsoft Photos
Try opening a photo in Microsoft Photos. If Windows prompts for codecs, install the HEIF Image Extensions and, if prompted, HEVC Video Extensions from Microsoft Store. Requirements can vary by Windows setup and app; other image viewers may already support HEIC. Avoid codec downloads from unofficial sites.
2. Use iCloud Photos for an iPhone library
If you already use iCloud Photos, iCloud for Windows can make your photo library available on a PC. This is useful for ongoing access to photos, but it is not a conversion step: a website or app that rejects HEIC may still need a JPEG or PDF copy.
3. Convert one photo to JPEG
For a single upload or an app that cannot read HEIC, export or convert that image to JPEG with a trusted app that supports HEIC. You can also set future iPhone captures to JPEG at Settings > Camera > Formats > Most Compatible. This affects new photos only; it does not change files already in your library.
4. Put several photos in one PDF
When photos belong together as receipts, application pages, or records, open HeicPDF in a current browser and select the HEIC files from File Explorer. Remove any extras, arrange the thumbnails into page order, then download one PDF. Conversion happens in the browser on your device. Inspect the PDF before sending; if a file cannot be decoded, update the browser or use a trusted HEIC-compatible app to export a copy.
Why Windows may not open HEIC by default
HEIC combines efficient image compression with codecs that are not included in every Windows installation. The Photos app can display the file only when the required decoder is available, and an older viewer may show a generic file-type error. This is a compatibility gap rather than proof that the photo is damaged. Keep the original file unchanged while you add official support or make a compatible copy.
If the Photos extensions fail to install
First run Windows Update, sign in to Microsoft Store, and confirm that the Store can install other apps. Search for the official HEIF Image Extensions publisher, restart Photos after installation, and try one small HEIC file. If HEVC is requested, check whether your Windows edition and device support the extension. A Store error can also come from work policies, a disabled Store, or a stale Photos app; use Settings > Apps > Installed apps > Photos > Advanced options to repair or reset it, then ask an administrator before installing software on a managed PC.
Windows 10, Windows 11, and viewer choices
Windows 11 setups often have newer Photos and codec components, while Windows 10 machines may need the extensions explicitly and may use the older Photos interface. The exact menus vary by update, so follow the wording shown on your PC. A dedicated HEIC viewer can be convenient for quick previews, but check its publisher, privacy policy, and licensing. For a file that must open in email, an upload form, or an office workflow, exporting one JPEG is usually simpler; use PDF when several images belong together.
Common error messages and a quick check
For messages such as “Photos app can't view this file type,” confirm the file ends in .heic or .heif, copy it to a local folder, and retry after updating Photos and Windows. Compare the file size with the original download and test another HEIC photo from the same phone. If only one file fails, it may be incomplete or use an unsupported variant. Open the image on the phone or Mac, export a JPEG copy, and keep the original for backup rather than renaming the extension.
Quick answers
Do I need both HEIF and HEVC extensions?+
They may be needed for HEIC/HEIF playback in Microsoft Photos on some setups. Requirements differ by app; check Microsoft Store and the app's current guidance.
Should I choose JPEG or PDF?+
Choose JPEG for a single photo upload. Choose PDF when multiple images need to stay together as pages in one document.
Where does the converted PDF go?+
It goes to your browser's normal Downloads location unless you changed the browser download setting.
Sources
Ready to convert?
Create a private PDF from your HEIC photos in the browser.