HEIC is the format your iPhone already uses for its own camera roll, and it stores a photo in roughly half the space of an equivalent JPG. Filemorph re-encodes a JPG to HEIC on-device, no upload required.

If you imported photos from a DSLR, a downloaded gallery or an old phone, they likely arrived as JPG — and JPG takes up close to twice the storage of HEIC for a similar-looking image. Converting a batch to HEIC before it fills up your camera roll is a quick way to claw back storage without deleting anything.
Filemorph re-encodes the JPG using Apple's HEIF encoder, the same one the Camera app writes to natively. Expect roughly 40 to 50% smaller files at a quality level that is hard to tell apart from the JPG original, since HEIC uses a more modern, efficient codec than JPG's decades-old one.
In the app: Convert → To HEIC.
HEIC stores a photo at a similar visual quality to JPG in roughly half the file size, which adds up fast across a camera roll of thousands of photos. Use it to reclaim iPhone storage; keep JPG for sharing with people or software that might not recognize HEIC yet.
Yes. Unlike web converters that upload your files to a server, Filemorph converts every file locally using Apple's frameworks. Nothing leaves your device, and it works with no internet connection. This conversion is in the free tier.
There is some recompression since both formats are lossy, but at Filemorph's default quality the difference is not visible to the eye. For an exact archival copy, keep the original JPG as well.
Typically 40 to 50% smaller for a photo of similar visual quality, since HEIC uses a newer, more efficient codec.
Yes, it is in Filemorph's free tier, including batches of up to 3 images at once.
Free, on-device, no upload. Plus 300+ more file operations.
Download on theApp Store