HEIF vs AVIF — Comparison & Free Converter
Fast, instant HEIF to AVIF conversion. No signup required. Just drop your .heif file and get .avif in seconds.
Batch Settings
Generation loss — quality may degrade
HEIF uses lossy compression and AVIF typically uses lossy mode. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
您是否曾遇到这样的情况：手机里珍藏的HEIF照片，想分享到微信朋友圈或传输给朋友，却发现对方设备打不开，或者上传游戏截图时遭遇兼容性难题？HEIF格式固然高效，但在跨平台分享和某些特定应用场景下，其兼容性有时会让人感到不便。幸运的是，有一种新兴的图片格式——AVIF，它不仅继承了HEIF的压缩优势，甚至在某些方面表现更优，同时拥有更广泛的设备和软件支持。将您的HEIF图片转换为AVIF，不仅能让文件更小巧，画质更清晰，还能让您的数字资产在不同平台间畅通无阻，无论是日常分享还是专业应用，都能体验到前所未有的便捷。
- 微信朋友圈分享
- 移动端游戏截图
- 老旧设备兼容
在中国大陆及周边地区，社交媒体和即时通讯工具对图片格式的兼容性要求较高，AVIF因其开放性和高效性，正逐渐成为更受欢迎的分享选择，尤其是在对流量敏感的移动网络环境下。
About HEIF to AVIF Conversion
HEIF or AVIF — which format should you use? The answer depends on your needs. Here's a quick breakdown.
HEIF stores images using highly efficient HEVC compression, commonly used on Apple devices. It has limited platform support. AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality. It has limited platform support.
Full Name: HEIF uses High Efficiency Image Format, while AVIF uses AV1 Image File Format. Compression: HEIF uses Lossy, while AVIF uses Lossy & Lossless. Transparency: HEIF uses No, while AVIF uses Yes.
So when should you convert HEIF to AVIF? This conversion is ideal when you You need a file that works in web browsers. This conversion helps you optimize files for fast web delivery.
HEIF uses lossy compression and AVIF typically uses lossy mode. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
If you've decided AVIF is the right choice, CocoConvert makes the conversion effortless. Upload your .heif file, pick AVIF, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert HEIF to AVIF
- 1
Choose your HEIF file
Upload your .heif file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to AVIF
Select .avif from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large image files.
- 4
Get your AVIF file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert HEIF to AVIF
Your HEIF image is decoded into raw pixel data, then re-encoded as AVIF.
Your HEIF file is decoded — the compressed/stored pixel data is expanded into raw RGB pixels
Pixels are re-encoded using AV1 Image File Format's lossless compression
Metadata (EXIF, ICC profiles) is transferred where AVIF supports it
The AVIF file is saved and ready for download
HEIF vs AVIF — Detailed Comparison
| Feature | .HEIF | .AVIF |
|---|---|---|
| Full Name | High Efficiency Image Format | AV1 Image File Format |
| Compression | Lossy | Lossy & Lossless |
| Transparency | No | Yes |
| Animation | Yes | Yes |
| Color Depth | 10 bits/channel | 10 or 12 bits/channel |
| HDR Support | Yes | Yes |
| Typical File Size | 1–3 MB per photo | 50% smaller than JPEG at same visual quality |
| Platform Support | Limited | Limited |
| Browser Support | Limited | modern browsers |
| Year Created | 2015 | 2019 |
| Open Standard | No | Yes |
Should You Convert HEIF to AVIF?
When to Convert
- ✓You need a file that works in web browsers
Frequently Asked Questions
Should I use HEIF or AVIF?
It depends on your goal. HEIF offers smaller files via lossy compression. AVIF preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is AVIF higher quality than HEIF?
Not necessarily. HEIF uses lossy compression and AVIF typically uses lossy mode. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible. Quality depends on the compression type and settings, not just the format name.
Can I convert HEIF to AVIF on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for HEIF to AVIF?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for HEIF to AVIF?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.