Hey @HGajipara, thank you for posting in our Community.
Currently, HubSpot’s Contact API doesn’t support direct file upload fields, which can indeed be limiting. One workaround is to store the file in an external storage service (e.g., AWS S3, Google Drive) via your custom form, then pass the file’s URL to a custom property in HubSpot. This way, you can still associate the file with the contact without uploading it directly to HubSpot. Let us know if this approach helps or if you have further questions!
To our top experts, @Anton and @DanielSanchez do you have any recommendations for @HGajipara?
Thank you,
Pam