Bulk PNM to AVIF Converter Online — Free HD Quality
Drag and drop your multiple PNM files into this 100% free online PNM to AVIF converter (.pnm 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 PNM files are removed from our servers right after. Also see:Handle many NRW to PNG at once.
Drop your PNM files here to convert to AVIF, or click to browse
Converts .pnm to AVIF (.avif) in HD quality — bulk, free, no signup
Choose FilesPNM vs AVIF — File Format Comparison
See how PNM and AVIF compare across file extension, MIME type, compression, and feature support. Related:Free online PNM to JXL tool.
| Feature | PNM | AVIF |
|---|---|---|
| File Extension | .pnm | .avif |
| MIME Type | image/x-portable-anymap | image/avif |
| Compression Type | Lossless | Lossy & Lossless |
| Transparency Support | No | Yes |
| Animation Support | No | Yes |
| Metadata Support | Yes | Yes |
What Is PNM Format?
Portable Anymap format, generic Netpbm format.
- Compression: Lossless
- 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