How to Use Index.Php Instead of Index.Html. The PHP engine lets you create dynamic Web pages. PHP also reads HTML, so you can save an HTML file with a PHP extension and upload the new file to your ...

When you purchase a domain name through GoDaddy, GoDaddy places its own "parked" page as the index. Changing this simply requires uploading a website file with the name "Index" to the root directory ...

This means that your main HTML index page can link to documents in the original format, to converted versions in HTML or converted versions in PDF.