Learn how to retrieve one public HTML document, choose between raw markup and readable text, preserve context, and troubleshoot differences from the rendered page.
Learn how an HTML document is organized, what belongs in head and body, how semantic elements and headings fit together, and how to inspect the returned structure.
Use Chrome, Safari, or Firefox menus to view the HTML of the page you are already on, then open View Source when you need the HTML returned for another public URL.