BMP, DIB, RLE, (TNB): Windows Bitmaps



This is the standard bitmap format supported by Microsoft Windows. ThumbsPlus supports all color depths (1, 4, 8, 16, 24 or 32 bit), and the compressed (RLE) formats for 4-bit (RLE4) and 8-bit (RLE8) bitmaps.


BMP files compressed with video codecs or JPEG are not yet supported.


The standard VGA driver does not properly decompress 8-bit compressed BMP files; for best color viewing (and nicest thumbnails), you should load a 256-color or higher Windows video driver,  which should eliminate this problem.


ThumbsPlus currently writes only uncompressed BMP files.


Note: TNB files are simply bitmap files with a .TNB extension.