What is Phtml File format
Phtml extension is associated with web page. You can try to open phtml files with web browsers.
PHTML files are the version of showing php files as html. You have chance to write PHML instead of Php files by using htaccess. Example: page.php file can be changed as page.phtml. The server will show the file after compiling. Besides, you can try to open phtml files with web browsers.
Phtmlpages ca be opened by firefox, chrome or opera browsers.
Related software about Phtml files.
Phtml file software links.