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In-memory processing
HEIC to PNG runs as JavaScript inside this tab.
Never uploaded
Safe for financials, contracts and NDAs.
No caps or sign-ups
File size is limited only by device memory.
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Convert HEIC to PNG when you need a lossless copy of an iPhone photo for editing, design work or documents, without adding any JPG compression.
The conversion adds no further loss: PNG stores every decoded pixel exactly. The file will be considerably larger than the original HEIC, because PNG compression is less efficient for photos.
Yes. HEIC to PNG runs entirely inside your web browser using JavaScript, so the file never leaves your device. It is safe for confidential documents such as contracts, financial records and IDs.
There is no fixed limit, because the file is processed on your own device. Very large files depend on your device's available memory; a modern laptop or phone handles hundreds of megabytes.
Yes. ZapConvert runs in any modern browser, including Safari on iPhone and iPad and Chrome on Android, with nothing to install. You can add several files at once and download them together as a ZIP.