Why do some colleges want applicants to upload Resume?

It’s too late for this year’s applicants anyway, but just curious. In the Common App, some colleges say “If you wish to upload your resume, do it below.” However, isn’t all activities already listed in the common app? What does a resume, presumably in Word or PDF form and has better formatting, add to the content of the application?

Ease of access in correct format. Helps move the resume to correct student file.

The appearance of a resume, along with what is included on it, can say a lot about the student. I did a resume for FSU and put a lot of thought into what to include, and was really happy with how it turned out!