Plesk - MIME Record
Process to add MIME record.
Step 1 - Log in to your Plesk control panel.
Step 2 - Go to the “Websites & Domains” tab and choose which domain you’d like to secure.
Step 3 - Click on Virtual Directory.
Step 4 - Select MIME types.
Step 5 - Click on Add MIME type.
Step 6 - Fill up the extension and content type then press OK.