Search results for “free e-sign website” often mix public file hosts with real signing tools. SignThatDoc is the second kind: a free e-sign PDF website with a closed door on each file.
The URL is not enough
Every upload gets its own signing address. That address is unlisted. A generated password is still required, so a leaked link without the password should not open the PDF.
Invited means named
You list the signee’s email when you create the request. The email is part of the record. The practical key they use to enter is still the password you share.
Signature-only is a security feature
If a free e-sign website also let people edit paragraphs, you would no longer know what was signed. SignThatDoc refuses those edits on purpose.
Use the homepage to start a file, and read the FAQ if you need shorter answers for a free e-sign website workflow.