Jimdo Creator doesn’t offer any functions for visitors to upload their own files, for example, in the contact form.
However, there are external providers that offer such forms with the option to upload files. You can integrate them with the help of adding external code in the Widget/HTML Element on your Jimdo website.
We recommend using the provider Jotform. If a visitor uploads a file to the Jotform form, you’ll receive the file via email.