When HEIC to PNG helps
HEIC stores iPhone photos efficiently, while PNG is widely accepted by image editors and workflows that need transparency-capable files. PNG conversion is useful for compatibility, although a photo saved as PNG can take much more space.
The output contains the decoded image pixels, not the original HEIC container or all of its camera metadata. Orientation is applied by the supported browser decoder.
Browser support and decoder licensing
This page relies on the browser's native HEIC decoder and is supported in Safari on compatible Apple devices. Other browsers may reject HEIC before conversion.
A separate WebAssembly HEIC decoder was not enabled because the candidate bundled decoder in the repository is still awaiting legal review. The page reports the browser limitation instead of silently switching to a server or third-party service.