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Portable Bitmap (Netpbm black-and-white image) · Free online file viewer
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What is a .PBM file?
A PBM file is a Portable Bitmap — a 1-bit black-and-white image from the Netpbm format family (siblings: PGM grayscale, PPM color). It comes in two variants: P1 (plain ASCII) and P4 (binary, 8x more compact). Open or convert it free with GIMP, IrfanView, or XnView MP; for sharing, convert to PNG.
- Full name
- Portable Bitmap (Netpbm black-and-white image)
- Category
- Raster Image Files
- Type
- Uncompressed Netpbm raster bi-level bitmap; ASCII (P1) or raw binary (P4) variant
- MIME
- image/x-portable-bitmap
- Developer
- Jef Poskanzer (Pbmplus / Netpbm project)