Will my iPhone photos lose quality?

Marginally, at most. HEIC is itself a lossy format, so converting to AVIF is a re-encode between two efficient codecs. FileMorf decodes the HEIC at high fidelity and encodes AVIF at a quality level where differences are effectively invisible for photos.

Why won't HEIC files open on Windows or Android?

HEIC is Apple's default camera format (iOS 11 and later), built on the HEVC video codec. Windows needs paid codec extensions to display it and support elsewhere is inconsistent, which is why converting to a mainstream format is usually the fastest fix. FileMorf decodes HEIC directly in your browser — no codec installs needed.

How much smaller will the AVIF file be?

Similar sizes — HEIC (HEVC) and AVIF (AV1) are closely matched codecs, so you keep the compact footprint while gaining web support.

Can I convert a whole batch of iPhone photos?

Yes. Drop in as many HEIC files as you like — each is converted in turn, and the results can be downloaded individually or together as a ZIP archive.

iPhone Photo Converter

Convert HEIC to AVIF

Convert iPhone HEIC photos to AVIF, a similarly efficient format the open web actually supports.

This conversion runs in this browser tab. The selected file is not uploaded for processing.

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HEIC to AVIF, step by step.

These steps describe the HEIC input and the AVIF export for this exact route.

Upload HEIC Photos

Drag and drop HEIC photos straight from your iPhone, iPad, or Mac. Batch upload is supported.

Adjust Quality

Use the quality slider to balance file size against fidelity. The default of 75% suits most images.

Download AVIF

Save the converted file right away. Multiple images are bundled into a ZIP for one-click download.

What to expect

What matters for AVIF output.

Review the behavior this HEIC to AVIF tool is designed to preserve, expose, or simplify.

100% Private

All processing happens in your browser. Your files never leave your device.

Best-in-Class Compression

AVIF's AV1-based encoding produces the smallest files of any mainstream image format, with transparency support.

Batch Processing

Convert multiple files at once. Download as a convenient ZIP file.

Questions about HEIC and AVIF.

Check the format behavior, limitations, and follow-up options before processing a real file.

AVIF is essentially the web's answer to HEIC: comparable compression built on the royalty-free AV1 codec instead of HEVC, and viewable in Chrome, Firefox, Edge, and Safari 16+. It is the best target for publishing iPhone photos online without giving up small file sizes. Note that AVIF encoding runs in your browser and requires a recent Chromium-based browser such as Chrome or Edge.

Related routes

Continue from AVIF.

Choose another format only when it matches the next job.

HEIC to JPG HEIC to PNG JPG to AVIF Browse all conversions

Next step

Ready to process another HEIC file?

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