Bulk HEIF to AVIF Converter Online — Free HD Quality
Drag and drop your multiple HEIF files into this free online HEIF to AVIF converter (.heif to .avif), and click the Convert button to bulk convert them to AVIF format in HD quality. Use the quality slider to fine-tune your AVIF output, then download your converted files one by one or as a single ZIP — your original HEIF files are removed from our servers right after.
To:
85%
Drop images here or click to browse
PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
HEIF vs AVIF — File Format Comparison
| Feature | HEIF | AVIF |
|---|---|---|
| File Extension | .heif | .avif |
| MIME Type | image/heif | image/avif |
| Compression Type | Lossy | Lossy & Lossless |
| Transparency Support | No | Yes |
| Animation Support | No | Yes |
| Metadata Support | Yes | Yes |
What Is HEIF Format?
High Efficiency Image Format for modern image compression.
- Compression: Lossy
- Transparency: Not supported
- Animation: Not supported
What Is AVIF Format?
AV1 Image File Format with superior compression for modern browsers.
- Compression: Lossy & Lossless
- Transparency: Supported
- Animation: Supported
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