Page Speed

Page speed is how fast a page loads and becomes usable. This is measured not just when the first pixel appears, but when a person can read, scroll, and click. It is measured in seconds.

Slow pages drive people away and raise your bounce rate, and search engines factor speed into search engine optimization (SEO) rankings. Many things affect it: image sizes, caching, hosting, and how much JavaScript the web browser has to process. Improving page speed is a common focus of work after launch.