Bulk PBM to PGM Converter Online — Free HD Quality
Drag and drop your multiple PBM files into this free online PBM to PGM converter (.pbm 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 — your original PBM 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
PBM vs PGM — File Format Comparison
| Feature | PBM | PGM |
|---|---|---|
| File Extension | .pbm | .pgm |
| MIME Type | image/x-portable-bitmap | image/x-portable-graymap |
| Compression Type | Lossless | Lossless |
| Transparency Support | No | No |
| Animation Support | No | No |
| Metadata Support | Yes | Yes |
What Is PBM Format?
Portable Bitmap format for monochrome images.
- 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
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