“We take your privacy seriously” means little when a service still requires uploading your document. Even editors that promise deletion after an hour have your file on their servers for that hour — long enough to be logged, cached, or exposed by a misconfiguration.
The only privacy model that removes the risk entirely is not receiving the file in the first place. That's how EditFreePDF works: the editor is a client-side application, your document stays in your browser's memory, and closing the tab erases everything. Auto-fill profile data lives only in your own browser's local storage. There are no document analytics, no content scanning, and no account linking your edits together.