How to convert an iPhone HEIC photo to JPG
Export an existing iPhone photo as JPG, convert it in Preview on Mac, or change the camera format for future photos.
Why the upload fails
A photo can open normally on your iPhone and still be rejected by a form that accepts only JPG or PNG. If the file ends in HEIC, export a JPEG copy. Renaming it to .jpg leaves the original format intact. Changing the camera setting affects future photos, so it will not convert an existing image.
Share a compatible copy from iPhone
- Open the photo in Photos and tap Share.
- If Options appears, choose Most Compatible and complete the share.
- Check the saved or received file. Conversion depends on the destination. If you still have HEIC, use an app that exports JPEG or convert on a Mac.
Turn off Location if you want to share without it. All Photos Data can include the original and edit history when sharing through AirDrop or an iCloud link.
Convert HEIC to JPEG on Mac
Open the file in Preview and choose File → Export. Select JPEG, set a quality level and save under a new name. Open the copy and check orientation, colors and size. For future captures, look under Settings → Camera → Formats for Most Compatible. Availability and behavior depend on the model and capture mode.
Check the form after conversion
Astrotor does not take HEIC directly. You can use it to resize or compress the JPEG copy. If the form asks for 100 KB, check the pixel requirements before the size limit. A mail app can also shrink an attachment during sharing, so inspect the exact file you intend to submit.
Image compressor
Once you have a JPG copy, use the compressor if you still need to meet a file size or pixel limit.
Open the tool