How should I name my web pages? .htm or .html?
There is no difference between .htm and .html pages. The server will recognize both of these file extensions. For consistency, you should name all of your web pages as .htm only or .html only.
In terms of your website's home page, the .html extension will have priority over the .htm extension. This means that if you have an "index.html" and an "index.htm" file on your website, visitors will be defaulted to "index.html" when they visit your domain.
23rd of December, 2014