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Convert HEIC to AVIF Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload HEIC
Drag and drop your HEIC file.
2Convert
Click Convert.
3Download AVIF
Download your AVIF file.
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 — 10–20% smaller, broader browser support, royalty-free. For Apple device storage, HEIC is better due to native integration.
- Will I lose quality converting HEIC to AVIF?
- Both are lossy formats. At default settings, the quality difference is visually imperceptible.
- Does AVIF support transparency?
- Yes. 8-bit alpha channel transparency is preserved during conversion.
- Can I convert multiple HEIC files to AVIF at once?
- Yes. Batch conversion of up to 10 files simultaneously.
- Which browsers support AVIF?
- Chrome 85+, Firefox 93+, Safari 16+, Edge — approximately 95% of global browser traffic.
- Is AVIF good for social media?
- Most social platforms re-encode uploads regardless of input format. Convert to JPG for social sharing. AVIF is best for images you serve directly on your own website.
Why convert HEIC to AVIF?
HEIC and AVIF are both next-generation image formats, but they serve different ecosystems. HEIC uses HEVC (H.265), which is patent-encumbered and supported primarily by Apple. AVIF uses AV1 — open, royalty-free, developed by the Alliance for Open Media (Google, Apple, Mozilla, Microsoft, Netflix).
For web delivery, AVIF is the better choice — it achieves files 20–30% smaller than WebP and up to 50% smaller than JPG at equivalent quality. Browser support covers 95%+ of global traffic (Chrome 85+, Firefox 93+, Safari 16+, Edge).
HEIC vs AVIF: compression and codec differences
Both HEIC and AVIF achieve dramatically better compression than JPG. In benchmarks, AVIF typically produces files 10–20% smaller than HEIC on photographic content, with a particular advantage on images with fine detail, gradients, and low-contrast areas.
AVIF also supports 10-bit and 12-bit color depth, HDR, and wide color gamut — matching or exceeding HEIC's capabilities. The main downside of AVIF is encoding speed: generating an AVIF file takes significantly longer than HEIC or WebP, though this only matters for real-time encoding.
HEIC vs AVIF comparison
| Feature | HEIC | AVIF |
|---|---|---|
| Codec | HEVC (H.265) | AV1 |
| Compression vs JPG | ~50% smaller | ~50–60% smaller |
| Browser support | Safari only | Chrome, Firefox, Safari, Edge (95%+) |
| Transparency | Yes | Yes (8-bit alpha) |
| HDR / wide gamut | Yes (10-bit) | Yes (10–12 bit) |
| Open / royalty-free | No (HEVC patents) | Yes (AV1) |
| Encoding speed | Fast | Slow (10–50x slower) |
| Best for | Apple device storage | Web delivery (smallest files) |
AVIF browser and app support in 2026
AVIF is supported natively in Chrome 85+, Firefox 93+, Safari 16+, and Edge (all Chromium versions) — approximately 95% of global browser traffic. The remaining 5% is primarily older iOS (below iOS 16) and legacy Safari.
Photoshop added native AVIF support in version 26.8 (June 2025). GIMP has supported AVIF since 2020. WordPress added AVIF upload support in version 6.5 (March 2024). Most image CDNs (Cloudinary, Imgix, Cloudflare) serve AVIF automatically.
When to use AVIF vs WebP after converting from HEIC
Use AVIF when file size is the top priority and you control the delivery stack. Use WebP when you need broader tool compatibility — more CMSs, editors, and apps support WebP than AVIF.
Use JPG when universal compatibility matters more than file size — email, messaging, social media, and legacy platforms all handle JPG without issues.
For a modern website, serve AVIF as primary with WebP and JPG fallbacks using the HTML picture element.
HEIC to AVIF for web developers
Core Web Vitals — particularly Largest Contentful Paint (LCP) — benefit directly from smaller image files. A hero image served as AVIF instead of JPG can improve LCP by 500–1500 ms on mobile connections.
Always provide a WebP or JPG fallback for the ~5% of browsers lacking AVIF support. For CMS-based sites, modern image optimization plugins (ShortPixel, Imagify, EWWW) handle AVIF generation automatically.
Privacy and file handling
All conversions happen server-side over encrypted HTTPS. Files are deleted immediately after download — never stored, never analyzed, never shared. No account required.
How Convertify converts HEIC to AVIF
Convertify uses a Rust backend with libvips. libheif decodes the HEIC source (including Apple's HEVC variant and Display P3 color profiles), and libvips encodes to AVIF via libaom. Color profiles are converted from Display P3 to sRGB for maximum browser compatibility.
Alpha transparency is preserved when present. EXIF metadata including orientation is maintained in the AVIF output.