Does converting AVIF to HEIC lose quality?

AVIF (AV1 Image File Format) is the newest mainstream still-image codec, derived from the AV1 video standard finalised by the Alliance for Open Media in 2018. It wraps an AV1 intra-frame in the same ISO base-media container family that HEIF/HEIC uses - the two formats are siblings, differing mainly in codec (AV1 versus HEVC). Netflix, YouTube thumbnails, and the Chrome 85+ image pipeline serve AVIF to capable browsers, and stock sites like Pexels increasingly deliver it by default. Converting AVIF to HEIC swaps the codec while keeping comparable compression efficiency.

The reason to convert is Apple-ecosystem depth. HEIC has been Apple's native camera format since iOS 11 (2017), so every Apple device, iCloud Photos, and countless Mac/iOS apps handle it flawlessly - while AVIF support only arrived with Safari 16 / iOS 16 and remains shallow: many Mac image editors, older iPads, and photo-library tools still refuse AVIF files. Designers who download AVIF stock but manage assets in Apple Photos or share via AirDrop convert to HEIC so the files behave exactly like iPhone captures - thumbnails, Quick Look, Markup, and sync all just work.

Both formats support 10-bit and 12-bit colour, HDR transfer functions, and alpha transparency, so an AVIF-to-HEIC conversion can carry 10-bit data and transparency across - unlike a JPG export, which flattens to 8-bit and discards alpha. The caveat is that both codecs are lossy: converting re-encodes the image, and generational loss applies, so convert once at high quality rather than round-tripping. For recipients outside the Apple world entirely, our HEIC to JPG tool remains the universal fallback.

Reasons to convert AVIF to HEIC usually come down to compatibility, file-size, or specific feature requirements. Common situations:

• An app or platform only accepts HEIC uploads.
• You need a feature unique to HEIC (e.g. transparency, vector scaling, animation, multi-page pages, etc.) that AVIF doesn't provide.
• You're optimising file size — modern formats often produce smaller files than the older format you started with.
• You need a single archival format across a project so files behave consistently in the same viewer.

1. Open the AVIF → HEIC tool on heic.now.
2. Drag your AVIF file onto the drop zone, or click Select files. You can drop a whole folder of files at once.
3. The output is fixed to HEIC. If the format supports extra options (page size, transparency background, quality, EXIF stripping), tweak them in the right-hand panel.
4. Click Convert. The job runs on our server and finishes in a few seconds for typical photos.
5. Download the result. Files stay in storage for 24 hours and are then permanently deleted.

The entire flow is free for the first 10 jobs per day with no signup required. A free account doubles that quota; a premium plan removes the limit entirely.

• Convert at high quality in one pass - AVIF to HEIC is a lossy-to-lossy re-encode, and repeated round-trips accumulate artefacts from two different codecs.
• 10-bit AVIF sources keep their bit depth in HEIC - prefer this path over JPG when the source is an HDR render or a Pixel Ultra HDR capture.
• Alpha transparency survives the conversion - HEIC supports alpha natively, so logos and cutouts don't need flattening the way a JPG export would.
• Check the ICC profile: some AVIFs from Pixel phones embed Display P3, which HEIC carries fine, but confirm your downstream app is colour-managed.
• If the destination is a website or CMS rather than an Apple device, skip HEIC and go straight to JPG - most upload forms reject both AVIF and HEIC.