Binary file formats

Raw PBM row planner

Calculate P4 bitmap row padding, raster bytes and canonical file size.

Your inputs

Start with an example

Example result

Each row packs one bit per pixel and rounds up to a full byte. Add the ASCII P4 width/height header for canonical file size.

10×3 pixels need two bytes per row, six raster bytes and an eight-byte header: 14 bytes total.

P4 only, with the generated comment-free LF header. Row-end unused bits are not additional pixels. P1 ASCII and multiple-image files are excluded.