Free · no upload · no account
Flatten PDF
Flattening turns fillable form fields into fixed page content so the answers can no longer be changed. Do it after filling and signing a form.
Open Flatten PDFRuns in this browser tab. Your file never leaves your device.
How to use Flatten PDF
- Open your filled PDF form.
- Run flatten.
- Download the flattened PDF.
Questions
Is Flatten PDF free in PDFMoose?
Yes. It is free in PDFMoose, with no account, no watermark and no daily task limit.
Are my files uploaded when I flatten a PDF?
No. The work happens entirely in your browser, so your file stays on your device and is never uploaded.
Can I undo flattening?
No. Once saved, the fields are part of the page, so keep a copy of the original fillable file.