Bulk PNM to PGM Converter Online — Free HD Quality
Drag and drop your multiple PNM files into this 100% free online PNM to PGM converter (.pnm to .pgm), and click the Convert button to bulk convert them to PGM format in HD quality. Use the quality slider to fine-tune your PGM 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:Free SRF to PNG converter.
Drop your PNM files here to convert to PGM, or click to browse
Converts .pnm to PGM (.pgm) in HD quality — bulk, free, no signup
Choose FilesPNM vs PGM — File Format Comparison
See how PNM and PGM compare across file extension, MIME type, compression, and feature support. Related:Batch process PNM to WBMP.
| Feature | PNM | PGM |
|---|---|---|
| File Extension | .pnm | .pgm |
| MIME Type | image/x-portable-anymap | image/x-portable-graymap |
| Compression Type | Lossless | Lossless |
| Transparency Support | No | No |
| Animation Support | No | No |
| Metadata Support | Yes | Yes |
What Is PNM Format?
Portable Anymap format, generic Netpbm format. See also:How to turn PNM into SGI?.
- Compression: Lossless
- Transparency: Not supported
- Animation: Not supported
What Is PGM Format?
Portable Graymap format for grayscale images.
- Compression: Lossless
- Transparency: Not supported
- Animation: Not supported