HEIC to PNG converts an iPhone photo into a lossless image that opens anywhere and keeps every pixel. Unlike a JPG conversion, PNG throws nothing away — which matters when you intend to edit, annotate or crop the shot repeatedly — and it supports transparency, useful for screenshots and graphics rather than ordinary photos.
Choose this direction over HEIC-to-JPG when you need an editable master or are feeding the image into design software that rejects HEIC. Expect a large file — lossless PNG of a detailed photo is several times the HEIC — so for a simple WhatsApp share or a portal upload, JPG is the lighter pick.