Are my PDFs uploaded to the server?
In the default browser workflow, PDFs and stamp images are processed locally in your browser and are not intentionally uploaded to our server.
What happens if server processing is later enabled?
Advanced features may require a server pipeline. If enabled, uploaded files should be deleted after processing and not retained as user documents.
When should I use PDFQFZ.WPF?
Use the Windows desktop app when files are confidential, when you need offline processing, or when you need features such as encrypted output and certificate workflows.
Does the browser tool create legally valid digital signatures?
Browser mode can add a visible signature mark. True certificate-backed digital signing requires a signing service or the offline desktop app.
Can I add cross-page stamps?
Yes. The browser tool can place stamp segments across pages along the selected edge.
How do I buy the desktop app?
You must log in first, then complete the $9.9 purchase. The checkout and download permission are prepared for WooCommerce or a membership plugin.