Free online HEIF to AVIF converter
Convert HEIF images to AVIF for smaller files and modern web compatibility.
Convert HEIF to AVIF online - free
Image size
Keeps aspect ratio and fits within these limits. Fill in one or both; leave empty for no limit. Larger values may enlarge the image.
Correctly orient the image using the gravity sensor data stored in EXIF
Strip the image of any profiles, EXIF, and comments to reduce size
Your file is processed instantly and never stored on our servers.
Import a file from a URL
Paste a direct link to the file. We download it to our server and it is converted exactly like an upload.
How it works
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Upload your .heif file
Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
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Perform .heif to .avif conversion
After successful file upload, click to convert when you are ready.
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Download converted .avif file
Conversion result is ready to download.
How to convert heif to avif file
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HEIF (High Efficiency Image File Format) is a modern container format commonly used by Apple devices and some cameras to store photos with high compression and good quality. AVIF (AV1 Image File Format) is a newer image format based on the AV1 codec, designed to deliver excellent compression, smaller file sizes, and strong image quality for web and storage use.
Why convert heif to avif
Converting HEIF to AVIF can help you keep high image quality while often reducing file size even further. AVIF is widely supported in modern browsers and is a strong choice for websites, apps, and long-term image optimization.
Best software for heif to avif conversion
ImageMagick is one of the best tools for this conversion because it supports many image formats and can be used on Windows, macOS, and Linux. For a simple graphical workflow, XnConvert is also a good option. If you want the most reliable batch conversion and control, ImageMagick is usually the best choice.
How to convert heif to avif
Using ImageMagick, you can convert a file from HEIF to AVIF with a command such as:
magick input.heif output.avif
If your HEIF file uses the .heic extension, the same method applies:
magick input.heic output.avif
In XnConvert, open the HEIF file, choose AVIF as the output format, then start the conversion.
Things to check before converting
- Color profile support to preserve accurate colors.
- Alpha channel if the image contains transparency.
- Batch conversion if you need to process many files at once.
- Quality settings to balance file size and visual detail.
When avif is the better choice
AVIF is especially useful for web publishing, image archives, and situations where smaller files matter. If your goal is efficient storage with modern compatibility, AVIF is often a better target than HEIF.
Summary
HEIF to AVIF conversion is straightforward and can improve compression efficiency. For the best mix of power and flexibility, ImageMagick is the recommended converter, while XnConvert is a user-friendly alternative.
Note: This heif to avif conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.
HEIF vs AVIF: format comparison
How the HEIF and AVIF formats compare on the properties that matter most for this conversion.
| Property | .HEIF High Efficiency Image File Format | .AVIF AV1 Image File Format |
|---|---|---|
| Compression | Both | Lossy |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Layers | No | No |
| Color depth | True color with alpha (32-bit) | True color with alpha (32-bit) |
| Metadata support | Extensive | Extensive |
| Opens in a web browser | Partial | Yes, natively |
| Typical file size | Small | Very small |
| Open standard | Yes | Yes |
| Best used for | Photographs | Photographs |
| Introduced | 2015 | 2019 |
| Developer | Moving Picture Experts Group (MPEG) | Alliance for Open Media |
| MIME type | image/heif | image/avif |
Frequently asked questions
Is the HEIF to AVIF converter free?
Yes, converting HEIF to AVIF on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.
How large can my HEIF file be?
You can upload HEIF files up to 2000 MB and convert up to 200 files at once in a single batch.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert HEIF to AVIF?
No. The HEIF to AVIF conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid HEIF file for this HEIF to AVIF conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.