.docx和.rtf有何分别

DOCX:
.DOCX files is developed by microsoft. It's very common because .DOCX has a lot of more function than .RTF, also, it is more safe than .RTF because they use diiferent encoding.
.RTF:
.RTF is also developed by microsoft, but it uses a diffrerent encoding, the file size is much more smaller also RTF development has been halted while DOC is still being actively developed.

2015-07-24 21:34:54 補充：
.DOC/.DOCX is better than .RTF

docx (Microsoft Word 2010 或以後專用) 強過 rtf (rich text format)

維基有解釋，自己睇。。。。。