Learn why iPhones use HEIC and when JPG makes sharing, editing and compatibility easier.
EditFull practical documentation · edition reviewed: 26 October 2026
When this task helps
HEIC can save space while preserving good quality, but some websites and apps still prefer JPG. Conversion is useful when the destination does not accept HEIC.
Worked example
An iPhone HEIC photo may be rejected by a form that only accepts JPEG. Convert a copy and check orientation, color and readability rather than renaming its extension.
What to check before starting
Convert a copy to JPG and keep the original HEIC when the photo matters. This preserves the source while giving you a broadly compatible version.
Choosing the settings
Test one photo first, then process the rest of the batch. Verify downloaded files, especially sources with motion or multiple-image features.
Limits that affect the result
The output is a still image. Original format-specific features may not survive, and conversion does not add detail to a small photo.
Mistake to avoid
Avoid repeatedly converting the same photo through lossy formats because each extra conversion can reduce detail.
Illustrative example: size and quality depend on the source file.