HEIC to AVIF Converter
Convert HEIC images to AVIF format directly in your browser. No file upload, no account required - files never leave your device.
Files never leave your device. Conversion runs entirely in your browser.
Add as many files as you need - they queue automatically. Add more at any time.
No account, no limits, no watermarks. Always free.
How to convert HEIC to AVIF
- 1.Drop your HEIC file onto the upload area or click to browse.
- 2.The converter processes your file locally - no upload needed.
- 3.Click Download to save your AVIF file.
HEIC vs AVIF: format guide
HEIC is a high-efficiency raster format based on HEVC video compression, used by default on iPhones. It stores photos at roughly half the size of JPG, with transparency and burst-sequence support. AVIF is a modern raster format based on the AV1 video codec, with lossy and lossless modes. It delivers excellent quality at very small file sizes, plus transparency and animation support. In practice, converting HEIC to AVIF is the right move when you need high-efficiency web photos.
- En tant que format moderne, AVIF produit généralement des fichiers 25 à 50 % plus légers que HEIC, à qualité visuelle similaire.
- Ce format nécessite notre décodeur étendu intégré au navigateur : les très gros fichiers HEIC peuvent donc prendre quelques secondes supplémentaires — tout se passe toujours sur votre appareil.
| Feature | HEIC | AVIF |
|---|---|---|
| Format type | High-efficiency raster image | Modern raster image |
| Compression | Lossy (HEVC) | Lossy or lossless |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Best for | iPhone photos | high-efficiency web photos |
Best Practices for HEIC to AVIF Conversion
- Preserve Aspect Ratio and Detail: Our in-browser conversion engine retains the original pixel dimensions and aspect ratio of your source HEIC graphic without introducing unwanted scaling artifacts.
- Transparency Handling: If converting an image containing transparent pixels into a format that does not support transparency (such as JPEG), transparent backgrounds are cleanly filled with a solid neutral background.
- Web Performance Optimization: For web deployment, modern formats offer enhanced compression curves that drastically cut byte payload, helping websites score higher on Google PageSpeed Insights and mobile usability benchmarks.
HEIC to AVIF Frequently Asked Questions
- How do I convert HEIC to AVIF?
- Drop your HEIC file onto the upload area or click to browse. The conversion starts automatically. When it finishes, click Download to save your AVIF file.
- Is the HEIC to AVIF converter free?
- Yes - completely free, no account required, no file limits, and no watermarks added to your images.
- Are my HEIC files uploaded to a server?
- No. All conversion happens locally in your browser. Your HEIC files never leave your device.
- Can I convert multiple HEIC files at once?
- Yes - drop multiple HEIC files at once or add them one by one. Each file is converted automatically and can be downloaded individually or all at once as a ZIP.
- What is the difference between HEIC and AVIF?
- HEIC and AVIF are different image formats with different compression methods and feature support. Use the converter to switch between them based on your needs.
- Will converting HEIC to AVIF reduce my file size?
- File size changes depend on the underlying compression algorithms. Converting uncompressed or lossless formats (such as PNG, BMP, or TIFF) into high-efficiency formats (such as WebP, AVIF, or JPG) frequently achieves a 30% to 80% reduction in storage size while maintaining excellent visual fidelity. Conversely, converting to lossless formats preserves exact pixel values.
- Is this HEIC to AVIF converter secure for confidential images?
- Yes. All processing executes locally inside your web browser using HTML5 Canvas, OffscreenCanvas, and WebAssembly APIs. Your graphics and personal photos never travel over the network, are never stored on external databases, and are immediately cleared from browser memory when you close the tab.