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Minimise bitmap mini/bmp.bmp #14

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Minimise bitmap mini/bmp.bmp #14

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Commits on May 17, 2021

  1. Minimise bitmap mini/bmp.bmp 

    Smashed the 334 bytes original down to a slim 60 bytes, by hand crafting a v1.x BMP file.

All versions of the BMP format begin with a basic 14 byte file header.
Next is the secondary DIB header; 12 bytes is the smallest possible (IBM OS/2 – v1.x BMP files).

Avoiding the more ‘advanced’ / modern bitmap file formats has a big impact for small files, while still widely supported and well documented.

Sources:
http://www.fileformat.info/format/os2bmp/egff.htm
http://www.fileformat.info/format/bmp/egff.htm
http://en.wikipedia.org/wiki/BMP_file_format
https://msdn.microsoft.com/en-us/library/dd183372(v=vs.85).aspx
https://msdn.microsoft.com/en-us/library/dd183374(v=vs.85).aspx
    @ace-dent
    ace-dent committed May 17, 2021
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