What a resume summary is
It's the two-to-three-line statement at the top of your resume that frames who you are, your strongest credential, and the value you bring. It replaces the dated "objective" and gives recruiters a fast read.
What makes one strong
Lead with your role and years, add a quantified achievement, and name the value you offer — skip fluffy adjectives. The generator produces variants in exactly this shape so you can pick the best fit.
Tailor it to the role
Swap in keywords from the job description. A summary that mirrors the role's language clears both human and automated screens.