Upload a file on a form inside New Landing Pages

Wondering if anyone has had any luck adding an upload button on a form inside new Landing Pages. So that the contact can upload a file (image) and it attaches to their contact record once submitting the form.

Hoping this solution can be integrated somehow using html code snippet and injection, but it’s from 2013 - https://theapiguys.com/upload-file-to-infusionsoft-filebox/

Anyone?

Infusionsoft never really had any formal method in place for their webforms/landing pages to allow uploading a file to a contact filebox. Most hosted their own page and coded the action themselves.