## BMP Tags

There really isn't much meta information in a BMP file as such, just a bit of image related information.

> Index1 | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 4 | ImageWidth | N |
> 8 | ImageHeight | N |
> 12 | Planes | N |
> 14 | BitDepth | N |

> 16

> Compression

> N

> 0 = None 1 = 8-Bit RLE 2 = 4-Bit RLE |  | 3 = Bitfields 4 = JPEG 5 = PNG |

> 20 | ImageLength | N |
> 24 | PixelsPerMeterX | N |
> 28 | PixelsPerMeterY | N |
> 32 | NumColors | N |
> 36 | NumImportantColors | N |

## BMP OS2 Tags

Information extracted from OS/2-format BMP images.

> Index1 | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 4 | ImageWidth | N |
> 6 | ImageHeight | N |
> 8 | Planes | N |
> 10 | BitDepth | N |

(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Jan 21, 2010

<-- ExifTool Tag Names