HEIC → AVIF
Convert iPhone HEIC photos to AVIF — smaller files, same quality, all offline.
Drop files here
or browse from your device
images · audio · video · documents · archives · Free: 200 MB per file · Pro: 5 GB
Your first conversion lands here automatically — saved on this device only, never uploaded.
100% Private
Runs in your browser. No upload.
Instant
No queue, no server roundtrip.
Offline-ready
Works after first load.
Switching a HEIC image to AVIF is usually about where it has to work rather than how it looks: one format is accepted, smaller or sharper in the place the picture is heading. AVIF (AV1 Image File Format) earns its place here: best-in-class compression, wide colour and HDR support, transparency included. HEIC is what your iPhone saves photos as by default since iOS 11. It holds roughly the same picture as a JPG in half the space, but outside the Apple ecosystem support is still patchy.
HEIC is what your iPhone saves photos as by default since iOS 11. It holds roughly the same picture as a JPG in half the space, but outside the Apple ecosystem support is still patchy.
Converting HEIC to AVIF re-encodes the picture: dimensions and visible content stay the same, while file size and colour handling follow the AVIF encoder. Detail already discarded by earlier lossy compression cannot come back, so AVIF preserves what is there rather than restoring what is gone. Transparency survives only if AVIF supports an alpha channel.
What you gain with AVIF: Best-in-class compression, wide colour and HDR support, transparency included.
Drop your HEIC file above and Morphio decodes it locally, then re-encodes it as AVIF using WebAssembly + the browser's native codecs. Nothing is ever uploaded — your files stay on your device. Free supports batches of 5 files; Pro supports batches of 250, subject to your device's memory. See exactly how in-browser conversion works.
Open the HEIC to AVIF page, drop your image on the drop zone and press convert. Morphio runs an in-browser image pipeline built on Canvas and WebAssembly codecs, so the HEIC data never leaves your device and no server ever receives a copy.
Colour profile and pixel dimensions are preserved; you choose the quality level before the file is written. Converting HEIC to AVIF only rewrites the container and encoding you asked for — the source file on your disk is never modified.
Yes. The free plan covers 10 conversions a day with files up to 200 MB and adds no watermark or sign-up. Morphio Pro ($5/month, or $29 once for lifetime access) removes the daily cap and raises the per-file limit to 5 GB.
Morphio decodes the HEIC file at full fidelity and re-encodes it at a high-quality AVIF setting, so the difference is normally invisible or inaudible. What conversion cannot do is recover detail the original HEIC file already threw away.
Yes — Free supports batches of 5 files and 10 conversions per day; Pro supports batches of 250 with no daily conversion cap. Your device's memory can impose a lower practical limit. Only usage counts reach the server, never files.
No. The conversion runs entirely inside your browser, so the file never leaves your device. The page and the required decoder must load first; free usage-limit checks may require a connection.