6.1.2 Understanding differences in file sizes
The RTF files Mif2Go produces can be quite large if the document you are converting contains bitmap graphics. You can minimize the size of RTF files by using 256-color bitmaps (instead of 24-bit true color), but even 256-color bitmaps do not compress well in RTF. However, once an RTF file is loaded in Word, Word can use internal compression methods to store the images more efficiently; then, when you save the file as .doc, the size will be smaller.
For files containing only text, the opposite holds: an RTF file is smaller than the .doc version of the same file.
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