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Turn your AVIF files into HEIC right in the browser — this tool will re-encode each file and hand it back in seconds, with nothing uploaded to any server. AVIF is the newest AV1-based format with the best compression available today, often half the size of JPEG. HEIC is Apple's high-efficiency format, storing iPhone photos at roughly half the size of JPEG with better quality. The conversion keeps your image faithful while switching it into the HEIC container. Free, private, unlimited, and watermark-free.
How to Convert AVIF to HEIC
Add your AVIF file
Drag and drop, or click to browse. You can convert several at once — they are processed together, right here in your browser.
Convert to HEIC
Pick a quality level if you want to trade a little detail for a smaller file, then press Convert. Encoding is instant for most images.
Download
Save each HEIC file, or grab them all as a ZIP. Nothing was ever uploaded, so nothing needs deleting.
Why convert AVIF to HEIC?
The main reason is iPhone photos, where it saves storage dramatically over JPEG. AVIF excels at modern web delivery, but when you need smaller, widely-supported files, HEIC is the better fit. This tool makes that switch instantly, right in your browser.
What happens to quality?
Converting into HEIC re-encodes the image, and because HEIC is lossy you control the trade-off with the quality setting. At high quality the difference is invisible.
A note on file size
File size will be broadly similar to your original AVIF.
About AVIF
AVIF is the newest AV1-based format with the best compression available today, often half the size of JPEG. Best for modern web delivery, offering the smallest files at a given quality with transparency and HDR.
About HEIC
HEIC is Apple's high-efficiency format, storing iPhone photos at roughly half the size of JPEG with better quality. Best for iPhone photos, where it saves storage dramatically over JPEG.
Common Uses for AVIF to HEIC
- Converting AVIF to HEIC for a project that specifically requires High Efficiency Image Container files, where AVIF is not accepted.
- Preparing images for the web, where HEIC keeps file sizes small and pages fast.
- Batch-converting a whole folder of AVIF images to HEIC at once, instead of doing them one at a time.
- Switching a AV1 Image File Format export into HEIC so it opens correctly in the tools your team actually uses.
- Compressing large AVIF images into smaller HEIC files to save storage and bandwidth.
AVIF vs HEIC: Key Differences
| Aspect | AVIF | HEIC |
|---|---|---|
| Compression | Lossy or lossless | Lossy |
| Transparency | Supported | Supported |
| Animation | Supported | Not supported |
| Colour depth | up to 12-bit colour with alpha | 10-bit colour, HEVC-compressed |
| Typical file size | Small | Small |
| Best used for | modern web delivery | iPhone photos |
Tips & Things to Know
Check the file size after converting
File size will be broadly similar to your original AVIF. If size matters for your use case, the before-and-after figures shown above tell you exactly what changed, so there are no surprises when you upload or share the result.
Transparency is preserved
Both formats support an alpha channel, so any transparent regions in your AVIF stay transparent in the HEIC — nothing is flattened onto a solid background.
Everything stays on your device
This converter runs entirely in your browser using your own processor. Your AVIF files are never uploaded, stored, or seen by anyone, which makes it safe for private photos, client work, and confidential documents. When you close the tab, nothing remains.
Tune the quality if you need to
For HEIC you can trade a little detail for a smaller file using the quality slider. At around 90% the difference is invisible to the eye, while the file can be much smaller — useful for web images and email attachments.
Frequently Asked Questions
How do I convert AVIF to HEIC for free?
Add your AVIF file above and press Convert. The HEIC download appears in seconds. It is completely free, with no signup, no limits and no watermark.
Is my AVIF uploaded to a server?
No. The entire conversion runs inside your browser using your device's own processor, so your images never leave your computer. That matters for private photos and confidential work.
Can I convert multiple AVIF files at once?
Yes. Add as many as you like and they are converted in one batch, then offered individually or as a single ZIP download.
Will converting to HEIC reduce quality?
Only if you choose a lower quality setting. At high quality the result is visually identical to the original.
Does HEIC support transparency?
Yes, HEIC supports an alpha channel, so transparent areas in your image are preserved.
Why is my HEIC file a different size than the AVIF?
Different formats compress differently. File size will be broadly similar to your original AVIF.
What is the difference between AVIF and HEIC?
AVIF is the newest AV1-based format with the best compression available today, often half the size of JPEG. HEIC is Apple's high-efficiency format, storing iPhone photos at roughly half the size of JPEG with better quality. That difference is what this conversion is really about.
Is there a file size limit?
Because processing happens in your browser, very large images depend on your device's memory, but typical photos convert instantly. Nothing is capped by an upload limit.
Do I need to install anything?
No. This works in any modern browser on any device — Windows, Mac, Android or iPhone — with nothing to install.
Is this AVIF to HEIC converter really free?
Completely free, forever, with no account, no watermark and no hidden premium wall.
100% free · No signup · No watermark · Files never leave your browser
Last updated: July 18, 2026 · FlipMyFormat Convert AVIF to HEIC
Written and maintained by the FlipMyFormat team · Runs entirely in your browser