AVIF to HEIF Converter

Convert AVIF to HEIF Online

AVIF and HEIF are close siblings — both wrap their image data in the same ISO/IEC 23008-12 (HEIF) container, but AVIF carries an AV1-coded payload while HEIF/HEIC carries an HEVC-coded one. Converting AVIF to HEIF re-codes the picture into the format Apple's Photos app, Final Cut, and other iOS/macOS tools expect natively, so an AVIF you downloaded from the web drops cleanly into an Apple-ecosystem photo library.

How to Convert AVIF to HEIF

1. Upload Your AVIF File: Drag and drop your .avif files onto the page or click "+ Add Files". You can queue several at once and they share the same settings.
2. Pick a Quality Preset: Choose a level from the Quality Preset dropdown (default is "Very High"). Higher presets keep more detail at a larger file size; lower presets compress harder.
3. Set Resolution (Optional): Leave Resolution Percentage on "Keep original", or downscale by percentage or to a preset width/height to shrink the output.
4. Convert and Download: Click "Convert" and save your HEIF file. No sign-up, no watermark.

AVIF vs HEIF at a Glance

Note the compatibility flip: going AVIF to HEIF narrows where the file opens in a browser (from ~93% of users down to roughly Safari 17+). HEIF earns its place inside the Apple ecosystem, not on the open web — if you need a universally viewable file instead, convert AVIF to JPG.

Frequently Asked Questions

Will I lose quality converting AVIF to HEIF?

Both formats are lossy by default, so this is a lossy-to-lossy transcode: the AV1 picture is decoded and re-encoded as HEVC, and that second pass can introduce a small generation loss. Picking a high Quality Preset keeps it minimal and visually hard to spot, but you cannot recover detail that AVIF's original compression already discarded. For an exact-pixel copy with no re-compression, convert AVIF to PNG instead.

Why does my HEIF file not open in Chrome or on Android?

Because in browsers HEIF/HEIC is supported only by Safari 17 and later — Chrome, Edge, Firefox, and Android browsers don't decode it. That's expected: HEIF is built for Apple's Photos app, iPhones, iPads, and Macs, not for embedding on a web page. If you need something that opens everywhere, AVIF (~93% of browsers) or JPG is the better target.

Is HEIF the same as the HEIC photos my iPhone takes?

Effectively yes. HEIC is the HEVC-coded variant of the HEIF container that Apple has used as its default camera format since iOS 11 (2017). A .heif file from this converter uses the same container and codec family, so it lands in Apple Photos and compatible apps the way an iPhone capture would.

If AVIF and HEIF share a container, why re-encode at all?

Because the codec inside differs. AVIF stores an AV1-coded image; HEIF/HEIC stores an HEVC-coded one. Apple's tools expect the HEVC payload, so simply renaming the file won't work — the pixels have to be decoded from AV1 and re-encoded as HEVC, which is what this converter does on the server.

How long do you keep my uploaded files?

Your files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. There's no sign-up, no watermark, and your images are never shared or made public.