If resumes are gathered and processed by some HR division, it's likely those people will be confused reading plain text. You can please their habits and send a

If resumes are gathered and processed by some HR division, it's likely those people will be confused reading plain text. You can please their habits and send a word doc. The same for recruiting agencies for consultants / freelancers. If it happens that you send resume directly to the technical person, good chances he won't care or even will be more pleased by plain text.