Monitor
What this page is actually doing: memory, frame timing, network requests and storage use.
Running here in the page — the same app the desktop opens.
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Most sites tell you nothing about their own behaviour. This one shows it — heap usage, frame rate, how much has been stored locally, and every request the page has made.
It is partly a diagnostic and partly a demonstration: the numbers make it obvious that the utilities here run locally, because there is no traffic when you use them.
What people open it for
- Checking memory and frame timing while something runs
- Seeing exactly which network requests a page makes
- Confirming how much local storage the site is using