Does Word Counter run locally in the browser?
Yes. Word Counter is a local browser workflow after the page loads, and the pasted text stays in the current browser session while counts are generated. That matters because the route is meant for quick practical work where you want to see the input, the status, and the output in one place without introducing a remote processing step. Local execution does not mean the route is infinitely capable, though. The page still enforces checked size and scope limits so the result stays predictable on normal laptops and phones. In other words, browser-side processing is a privacy and reliability boundary, not a promise that every imaginable input should be accepted. The tool is strongest when you stay inside the visible contract and use it for the narrow job it was published to solve.