What does flattening a PDF do?

Flattening removes interactive form fields and merges annotations directly into page content, making the PDF non-editable.

Yes. Our tool is completely free with no sign-up or watermarks.

Will the visual appearance change?

No. All content looks exactly the same after flattening.

Yes. Files are processed on encrypted servers and deleted after 1 hour.

Yes. Signatures and all annotations are burned into the page permanently.

Use our free flatten pdf tool to flatten pdf online free. No software, no account — just upload and flatten.

or drop PDF file here

Max 50 MB per file

Drop or select a PDF with form fields or annotations.

Click Flatten PDF — all interactive elements are burned in.

Download the flattened PDF. No watermarks, no sign-up.

Flatten Pdf Online Free instantly with our free online PDF flattener. Ideal for flatten pdf 9 — lock form fields and annotations permanently.

All interactive elements (form fields, checkboxes, signatures, stamps) are merged into the page content. The output is a static, non-editable PDF.

Your files are automatically deleted from our servers after 1 hour. No registration, no watermarks.