HEIC is designed for efficient photo storage
Apple devices commonly use HEIC as part of their High Efficiency camera setting. The format can store high-quality photographs efficiently, which makes it useful when you want to reduce storage without relying on the older JPEG format.
If your devices and applications already support HEIC, there is often no need to convert a photo simply because of its file extension.
JPG is the compatibility-first choice
JPG has been supported for decades and works with an extremely broad range of websites, editors, messaging apps, document software and older devices.
That makes JPG useful when an HEIC photo needs to be uploaded somewhere that does not accept HEIC, sent to someone using incompatible software, or opened in an older workflow.
Which format gives better image quality?
The file extension alone does not determine how good a photo looks. Image quality depends on the source image and the compression used when it was encoded.
Converting an HEIC image to JPG does not improve the original photo. The HEIC image must be decoded and encoded again as JPEG, so the JPG is a new representation of the same image rather than a higher-quality copy.
HEIC and JPG make different file-size trade-offs
HEIC is intended to store images efficiently and can often achieve smaller files than older photo formats for comparable visual results. JPG also uses lossy compression, but its main advantage today is its near-universal compatibility rather than being the newest or most efficient format.
The exact size difference depends on the photo and encoding settings, so converting HEIC to JPG does not guarantee that the resulting file will always be smaller.
Which should you use?
Keep HEIC when your devices and software support it and you want to retain the original iPhone photo. Convert to JPG when compatibility is more important and the image needs to work reliably with a wider range of software or upload forms.
- Keep HEIC for supported Apple and modern photo workflows
- Choose JPG for broad compatibility and everyday sharing
- Keep the original HEIC if the photo matters to you
- Use PNG instead when lossless output or transparency is more important than photographic file size