Question
How to configure MIME types for a domain in Plesk?
Answer
Plesk for Linux
Go to Domains > example.com > Apache & nginx Settings.
Next to MIME types, select the Enter custom value option button.
Add required MIME types and apply the changes.

Plesk for Windows
For the particular virtual directory
Go to Domains > example.com > Virtual Directories and switch to the MIME Types tab.
Click Add MIME Type.

Fill in the fields.
Click OK to create the MIME type.

For the whole domain
- Go to Domains > example.com > Hosting Settings > IIS Settings
- Add/Edit required MIME type directly in section MIME
types