Flatten a PDF
Filled a form and want to send it without anyone editing your answers? Flattening converts interactive fields into normal page content — what you see becomes what everyone gets, in every viewer.
How to use the Flatten PDF tool
Select or drag the filled PDF form.
Click “Flatten PDF”.
Download the locked, flattened copy.
Your files stay on your device
This tool runs entirely in your browser using JavaScript and WebAssembly. There is no upload step and no server processing — open your network panel and check: zero document data is transmitted. It even keeps working offline once the page has loaded.
Frequently asked questions
When should I flatten a PDF?
Before emailing a filled form, before printing services, before archiving — any time the answers must not change and the file must display identically everywhere, including viewers that handle forms badly.
Can flattening be undone?
No — that is the point. Keep your original interactive file if you may need to edit answers later, and share the flattened copy.
My form shows empty fields in some apps. Does flattening fix it?
Usually yes. Some viewers don’t render form field appearances; flattening bakes the values into the page so every app and printer shows them.
Is it safe to use this tool with confidential documents?
Yes — and verifiably so. PDFAgent has no upload step: your file is processed by JavaScript running in your own browser and never leaves your device. You can open your browser’s network panel (or even go offline after loading the page) and confirm that no document data is transmitted.