Files with the .xlm extension use the application/vnd.ms-excel MIME type. This page explains what the extension is for and how it is typically used.
| Extension | .xlm |
| MIME Type | application/vnd.ms-excel |
| Category | application |
| Source | iana |
| Compressible | false |
| Other Extensions | .xls, .xla, .xlc, .xlt, .xlw |