Convert HEIC to WebP

No — that is the whole reason I built this. The conversion runs in your browser using WebAssembly, so your files never leave your device; there is no server in the loop at all. It also means the tool keeps working offline once the page has loaded, and there is no file size limit beyond your device’s memory.

Every lossy re-encode discards a little more information. HEIC → JPG → WebP compresses the photo twice; converting directly compresses it once. Same destination, one fewer generation of loss — the difference shows in fine texture like hair, foliage and fabric.

Quality 78–85 is my recommendation for photos in page content — indistinguishable at normal viewing sizes. For full-screen hero images go a touch higher; for small product thumbnails 70 usually holds up fine.

Only Safari can, and only in some contexts — Chrome and Firefox do not render HEIC at all. WebP works in every current browser, which is why converting is still necessary for anything public-facing.

They are close relatives — both grew out of video codecs, both store a photo in roughly half of JPEG’s bytes. The difference is where they work: HEIC plays inside Apple hardware and almost nowhere else, while WebP renders in every current browser. Converting swaps ecosystem compatibility for web compatibility at nearly the same file size — precisely the trade you want when publishing.

When the destination is print, an editor, or an upload form with an old allowlist — plenty still accept only jpg and png. Print shops in particular want HEIC to JPG at high quality, or HEIC to PNG for lossless. WebP is a web delivery format: use it for pages you control, not for files other people’s software must open.