It’s 2025, and this feature is still missing. People have been asking for it since 2017… Wow 
I’m shocked this function to limit PDFs to be uploaded into HubSpot hasn’t been implemented. This would protect data from viruses?
Absolutely needed with cyber attacks!
this is not a nice to have; it’s a necessity. allowing open uploads of any type is a HUGE risk for hubspot as well as for the site owners.
Absolutely insane to see this not implemented already… It’s a big concern for each user of HubSpot…
Please add this.
+1 to this idea please.