Core Web Vitals history

Past performance of a page's Core Web Vitals is what RUMvision's extension surfaces. It gives access to historical Core Web Vitals data going back as far as six months for any domain, and lets users explore detailed history for specific URLs in a simple overview of how the metrics moved over time. The publisher is rumvision.com, and it is listed under tools. It is a lookup for trends rather than a one time measurement, which helps when checking whether speed work has paid off or when a drop began. The stated aim is helping people stay ahead and optimize the web experience using that time history.