Flatten PDF
Flatten a PDF's form fields so values become permanent and non-editable — processed locally.
How to use the Flatten PDF
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Open your filled PDF form.
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Click Flatten.
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Download the flattened PDF.
How to flatten a PDF
Flattening converts interactive form fields into static page content, so the answers become a permanent part of the document and can't be changed. It's useful before sharing a completed form. This tool flattens the form with pdf-lib locally, so your data never leaves the browser.
Key features
- Bakes form values into the page
- Makes fields non-editable
- Keeps the rest of the PDF intact
- 100% client-side — no upload
Frequently asked questions
What does flattening actually do?
It turns interactive fields into fixed page content, so the values display the same everywhere and can no longer be edited.
Can I still read the values after flattening?
Yes — the values stay visible; they just become part of the page rather than editable fields.
Is my document uploaded?
No. Flattening runs locally in your browser.