The Efficient category evaluates how fast and resource-friendly a website works. A high score signals short loading times and a clean technical foundation.
The sub-score is primarily based on Lighthouse metrics for Performance and Best Practices. Additionally, relative benchmarking is performed: transferred data volume and the number of server requests are put in relation to current average values from the HTTP Archive database. This accurately measures how efficiently the site performs compared to global web standards.
Efficiency here not only reduces CPU load but directly improves the user experience.