There is nothing called preferred length of a resume.

The average length of a resume isn't 1 page. It isn't 2 pages. It isn't 700 words. It's exactly as long as the recruiter's attention span on that day. If they are hungover, it's 4 seconds. If they're desperate to fill a role, it's 40 minutes. If there are pretending to deep dive, it's 4 hours.. If there is no internet.. well.. they are lying. But you get the drift right?

Mood > Resume > Talent