Perch Form Template Tag perch:input type file

This will create a file upload field that accepts file formats. The allowed formats are defined in the file /perch/config/filetypes.ini

When using type="file" you should also use the attribute accept with a string of mime type groups from filetypes.ini that are acceptable to be uploaded.

<perch:input type="file" id="cv" accept="pdf doc">

Remember if using file inputs with the Forms app, you need to configure a file upload location within the form options.