HEIC (Apple's default photo format since iOS 11) can't be decoded by a web browser's Canvas API directly — there's no native browser support for reading HEIC pixel data. AiEraser handles this with a brief server-side decode step (open-source libheif via WASM), after which the file is processed and discarded in memory — never written to disk. Full detail in our privacy policy.
The file is decoded server-side, then re-encoded (currently to JPEG) the same way any other format is cleaned — the output carries none of the original metadata, since the decode-and-re-encode pipeline only carries pixel data through.
Try it now — upload a HEIC file directly from your iPhone.