Yes, your visitors can upload files using your contact form. Use the File upload field to receive files from your website visitors.
Go to the Form Editor and you’ll find the File Upload field under Basic Fields.
Keep in mind, however, that form users cannot upload files bigger than 150 MB per File Upload field.
Form users can cancel the file they have uploaded by pressing the X sign next to the File Upload.
In My Account → Uploads Manager, you’ll find all the files that have been uploaded by your form users. Read more on how to manage file uploads from online forms.