Samiksha Jaiswal (Editor)

Wireless Application Protocol Bitmap Format

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Covid-19
Filename extension  .wbmp
Developed by  WAP Forum
Internet media type  image/vnd.wap.wbmp
Type of format  Image file formats

Wireless Application Protocol Bitmap Format (shortened to Wireless Bitmap and with file extension .wbmp) is a monochrome graphics file format optimized for mobile computing devices.

WBMP images are monochrome (black & white) so that the image size is kept to a minimum. A black pixel is denoted by 0 and a white pixel is denoted by 1.

For colored images, WAP supports the Portable Network Graphics format.

Example of a Wireless bitmap

The 3x3 bitmap:

becomes

Octet 1: 00000000 (WBMP type)

Octet 2: 00000000 (Fixed header)

Octet 3: 00000011 (Width) = 3

Octet 4: 00000011 (Height) = 3

Octet 5-7: 3 bits for data then Padding (8-3=5)

Octet 5: 010 00000 (Row 1)

Octet 6: 101 00000 (Row 2)

Octet 7: 010 00000 (Row 3)

References

Wireless Application Protocol Bitmap Format Wikipedia


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