Performance Score Definition For SEO & Webpage Speed

Performance Score is a webpage speed metric that rates the loading speed of websites compared to other sites across the web.

Scores are between 0-100, with 0-49 being the worst, 50-89 being average, and 90-100 being the desired page load speed rating.

This is the primary output of the Google Page Speed Insights Tool, which offers a score for both Desktop & Mobile (Fast 3G) connections.