.htm on PAGES Plugin
Appends .htm to the URL of PAGES when using permalinks
Appends .htm to the URL of PAGES when using pretty permalinks
Check out more information here http://www.discountwebdesigner.com/wordpress-plugins/htm-on-pages.htm
Installation
- Upload htm-on-pages.php to the
/wp-content/plugins/directory - Activate the plugin through the ‘Plugins’ menu in WordPress