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Convert HEIC to AVIF Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your HEIC file
Click the upload button or drag and drop your HEIC file onto the converter.
2Convert
Click Convert. Convertify processes your file instantly using Rust and libvips.
3Download AVIF
Download your converted AVIF file. The original HEIC is deleted from the server immediately.
Supported Image Formats
HEIC
Apple photo format used by iPhone and iPad. High quality with small file size.
AVIF
Next-gen format with excellent compression. Up to 50% smaller than JPG.
HEIF
High Efficiency Image Format — same as HEIC, used on Apple devices.
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
TIFF
Professional lossless format used in printing and photography.
PPM
Portable Pixmap format used in Unix/Linux environments.
HDR
High Dynamic Range format storing extended brightness data.
FITS
Flexible Image Transport System used in astronomy and science.
PDF
Portable Document Format. Convert PDF pages to JPG, PNG or WebP images.
AVIF vs WebP vs HEIC vs JPG
Quick comparison to help you choose the right format
AVIF
- Size: Up to 50% smaller than JPG
- Browsers: Chrome, Firefox, Safari
- Transparency: ✓
- Best for: Web performance
WebP
- Size: 25-35% smaller than JPG
- Browsers: All modern browsers
- Transparency: ✓
- Best for: Web compatibility
HEIC
- Size: ~50% smaller than JPG
- Browsers: Safari only
- Transparency: ✓
- Best for: iPhone storage
JPG
- Size: Baseline
- Browsers: All browsers & apps
- Transparency: ✗
- Best for: Universal sharing
Frequently Asked Questions
- Is AVIF better than HEIC?
- For web delivery, yes — AVIF achieves better compression than HEIC. For device storage on Apple devices, HEIC is more practical since it's the native format.
- Will I lose quality converting HEIC to AVIF?
- Minimal quality loss. Both are lossy formats. Convertify converts at high quality settings by default.
- Does AVIF support transparency?
- Yes. AVIF supports alpha channel transparency. HEIC also supports it, so transparency is preserved during conversion.
- Can I convert multiple HEIC files to AVIF at once?
- Yes. Convertify supports batch conversion — upload multiple HEIC files and download them all as AVIF simultaneously.
- Which browsers support AVIF?
- Chrome 85+, Firefox 93+, and Safari 16+ support AVIF natively. This covers over 90% of global browser traffic as of 2026.
- Is AVIF good for social media?
- Most social media platforms do not accept AVIF yet. Use JPG or PNG for social media uploads.
Why convert HEIC to AVIF?
AVIF is the next-generation web image format with better compression than both HEIC and WebP. If you have iPhone photos in HEIC format and need to use them on the web, AVIF gives you the smallest possible file size while maintaining excellent visual quality. AVIF is supported in Chrome, Firefox, and Safari — covering over 90% of global browser traffic as of 2026.
AVIF browser and app support in 2026
AVIF is supported natively in Chrome 85+, Firefox 93+, and Safari 16+. This covers over 90% of global browser traffic. Outside browsers, AVIF support is still limited — most desktop photo editors and social platforms do not accept AVIF uploads. For web delivery AVIF is excellent; for sharing outside the browser, convert to JPG or PNG instead.
HEIC vs AVIF comparison
| Feature | HEIC | AVIF |
|---|---|---|
| Compression | ~50% better than JPG | Up to 50% better than JPG |
| Browser support | Safari only | Chrome, Firefox, Safari |
| App support | Apple ecosystem | Limited (new format) |
| Transparency | Supported | Supported |
| HDR support | Yes | Yes |
| Best for | iPhone storage | Web delivery |
How Convertify converts HEIC to AVIF
Convertify uses Rust with libvips and libheif for accurate HEIC to AVIF conversion. Color profiles and transparency are preserved. Files are processed server-side and deleted within 6 hours. No account required.
HEIC vs AVIF: which has better compression?
Both HEIC and AVIF achieve roughly 50% better compression than JPG, but through different codecs. HEIC uses HEVC (H.265) while AVIF uses AV1. In practice their compression efficiency is comparable for photographs. AVIF has a slight edge in some benchmarks, particularly for images with fine detail and gradients. The key difference is not compression but use case: HEIC is optimized for Apple device storage, AVIF is optimized for web delivery.
When to use AVIF vs WebP after converting from HEIC
Use AVIF when you need the best possible compression for web images and your audience uses modern browsers (Chrome, Firefox, Safari). Use WebP when you need broader compatibility — WebP has been supported since 2010 and works in more tools and platforms than AVIF. For maximum compatibility, use the HTML picture element: serve AVIF to supported browsers with WebP or JPG as fallback.
HEIC to AVIF for web developers
Web developers working with iPhone photography often receive HEIC files from clients or content teams. Converting HEIC to AVIF gives you web-optimized images ready for delivery. Pair with responsive images using srcset and the picture element for browsers that do not yet support AVIF. CDNs like Cloudflare and Cloudinary can serve AVIF automatically based on browser Accept headers, so you can upload HEIC once and let the CDN handle format negotiation.
Privacy and file handling
Convertify processes all files server-side over an encrypted HTTPS connection. Files are never stored permanently — they are deleted within 6 hours even if not downloaded. No account is required and no personal data is collected beyond what is necessary for the conversion.