Bulk HEIF to AVIF Converter Online — Free HD Quality
Drag and drop your multiple HEIF files into this 100% 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 — no signup and no downloads needed, and your original HEIF files are removed from our servers right after. Also see:Free online HEIF to PDF tool.
Drop your HEIF files here to convert to AVIF, or click to browse
Converts .heif to AVIF (.avif) in HD quality — bulk, free, no signup
Choose FilesHEIF vs AVIF — File Format Comparison
See how HEIF and AVIF compare across file extension, MIME type, compression, and feature support. Related:How do I change HEIC to XPM?.
| 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. See also:Handle many HEIC to RAS at once.
- 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