Adding a new file type or filter to the mime.types and mime.convs files is a straightforward activity. However, when we upgrade to a new version of CUPS, these files are overwritten. In such a scenario, it is better if we have created different files with the extensions .types and .convs in the /etc/cups directory. This will help you keep your configuration files intact even if CUPS is being upgraded. It is recommended that you use the product or format name as given here. This will help you recognize the file with its filename:

mycups.types
mycups.convs

It's not compulsory that you use the product or format name while creating these files. If you are providing a filter for a common file format or printer, you can also add the company's or even author's name:

acme-msword.types
CUPSfilters, addingacme-msword.convs

This helps prevent the name conflicts if you use different file types and filters. Once the names for these files are chosen, we can create them...