Does all processing happen only in my browser?

The browser controls the queue, parses the returned HTML and creates the XML. To retrieve other websites despite browser cross-origin restrictions, each requested URL is sent through this site’s Cloudflare Worker.

The Worker temporarily handles that URL and the HTML response. The application does not persist crawl histories, but infrastructure and target websites can process technical request data. Do not enter confidential URLs. See the Privacy Policy for the processing details.