What does flatten do?

It bakes form field values into page content so they can no longer be edited — useful before sharing a filled form.

What if there are no fields?

The tool reports that and still lets you save; there is nothing interactive to flatten.

Should I flatten before encrypting?

Often yes for filled applications — flatten, then Encrypt PDF or Confidential Send so recipients cannot tweak answers.

Short answer

Flatten forms runs entirely in your browser. Flatten form fields so values can no longer be edited. No account, no watermark, and the file never leaves your device.

Stays on your device·No upload·No account·No watermark·Offline after install·How it works Methodology Privacy

Flatten PDF forms

Flatten form field values so they can no longer be edited.

Drop a file or browse

Drop a PDF — bake form field values into the page so they can't be edited

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About this tool

Flatten form field values so they can no longer be edited — useful before sharing a filled form.

How to use Flatten PDF forms

1Open a PDF with filled form fields.
2Click Flatten.
3Download the non-editable PDF.

You need

A PDF with form fields

Frequently asked questions

What does flatten do?
It bakes form field values into page content so they can no longer be edited — useful before sharing a filled form.
What if there are no fields?
The tool reports that and still lets you save; there is nothing interactive to flatten.
Should I flatten before encrypting?
Often yes for filled applications — flatten, then Encrypt PDF or Confidential Send so recipients cannot tweak answers.