Strata reveals the history of websites through web archives. Using data gathered by Pluto, it maps every URL onto a shared timeline, from its first archived capture to its last. See when pages appeared, how long they lasted and what survives. Zoom from decades to individual captures and open pages as they appeared in the archives.
Strata opens with a demonstration dataset of 8,706 URLs from The University of Edinburgh's web estate (ed.ac.uk), with captures up to August 2026.
Reading the timeline
A URL. Line brightness corresponds to capture frequency