HEIC 转 AVIF — 新一代压缩
将 HEIC 转换为 AVIF，获得高级质量下尽可能小的文件。100% 在浏览器中。
Output format
Quality
92%Drop your HEIC files — convert to AVIF
or click to browse · processed locally in your browser
Free · 5 of 5 watermark-free conversions left today
AVIF 是最新的图像格式，压缩比 WebP 还要好。将您的 HEIC 照片转换为 AVIF，获得高视觉质量下的最小文件——非常适合现代网站。
How to convert HEIC to AVIF in 3 steps
Fast, free, and 100% private — every conversion happens inside your browser.
- 1
Drop your HEIC files
Drag one or more .heic photos into the converter, or tap to browse from your device. Folders and batches work too.
- 2
Choose AVIF as the output
AVIF is selected automatically on this page. Adjust the quality slider if you want a different balance between size and fidelity.
- 3
Download your AVIF files
Conversion runs locally — nothing is uploaded. Download files individually or grab a single ZIP for the whole batch.
What is the HEIC format?
HEIC (High Efficiency Image Container) is Apple's default photo format on iPhone and iPad since iOS 11. It uses HEVC compression to store images at about half the size of JPG with the same visual quality. The trade-off: outside of Apple devices, HEIC is still poorly supported — most Windows apps, Android phones, web platforms and email clients can't open it natively.
Why convert HEIC?
Converting HEIC to a widely-supported format like AVIF solves three problems at once: your photos open everywhere, they're easy to share with non-Apple users, and you can upload them to any website, CMS or printing service without errors. With this tool, conversion is instant, free and never sends your photos to a server.
HEIC vs AVIF — quick comparison
| HEIC | AVIF | |
|---|---|---|
| File size | Very small | Smallest — 30–50% smaller than JPG |
| Quality | Excellent | Excellent, often better than WebP at the same size |
| Browser support | Safari only | Chrome, Firefox, Safari, Edge |
| Best for | Apple devices | Modern websites, image-heavy apps |
Device & app compatibility
Where HEIC works out of the box, and where you really need AVIF.
| Platform | HEIC | AVIF |
|---|---|---|
| iPhone / iPad (iOS 11+) | Native | Native |
| macOS (10.13+) | Native | Native |
| Windows 10 / 11 | Extension required | Native |
| Android | Limited (recent versions only) | Native |
| Chrome, Firefox, Edge | Not supported | Supported |
| Gmail, Outlook, WhatsApp | Often rejected | Always accepted |
Need a different format?
Convert your HEIC photos to any other format — same tool, same privacy.
FAQ
主流浏览器支持 AVIF 吗？
是的——Chrome、Firefox、Safari 和 Edge 都支持 AVIF。
AVIF 文件比 JPG 小多少？
在等效质量下通常小 30-50%。
转换在服务器上进行吗？
不。一切都在您的浏览器中运行。
可以一次转换多张照片吗？
可以，带 ZIP 批量下载。
AVIF 是无损的吗？
AVIF 可以是有损或无损的。我们使用可调质量的有损压缩。