Forms & leads
File attachments
Private lead attachments, allowed formats, limits, and authorized downloads.
Supported attachments
The bounded browser file intake supports PDF, JPEG, PNG and WebP files. Each file is limited to 5 MiB, with at most three files and 15 MiB total per submission.
Files are private and are associated with accepted leads. Authorized downloads use short-lived URLs; Panther Hook is not a general file-hosting service.
Security and availability
Upload capability depends on the form, plan and production runtime. Malicious content scanning is not offered as a guaranteed service: use your own review process for untrusted attachments.
Protected server-side API submissions do not accept file uploads. Use the dedicated browser upload flow described by the form setup when attachments are required.
Didn't find the answer? Contact support. For endpoint descriptions, see the API reference.