Merge form fields into the page so filled values become permanent and non-editable. Your PDF looks the same on every reader and printer. 100% in your browser — no upload, no account, no Adobe.
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Flatten form fields so the PDF looks the same on every reader
100% in your browser · Your PDF never leaves your device · No upload, no signup
What does flattening a PDF mean?
Flattening merges interactive form fields — text boxes, checkboxes, radio buttons, dropdowns — into the static page content. The filled values become a permanent part of the page and can no longer be edited. The document then looks identical on every PDF reader and printer.
Is this tool free?
Yes, completely free. No account, no subscription, and no file upload required. Everything runs in your browser using pdf-lib.
Is my PDF uploaded to a server?
No. Your PDF is processed entirely inside your browser. No data is sent to any server — your file never leaves your device.
What happens if my PDF has no form fields?
The tool honestly tells you that no interactive fields were found. It still produces a clean re-saved copy and downloads it, but it will note that no fields were flattened.
Why should I flatten a PDF before sending it?
Flattening prevents recipients from changing the filled values, ensures consistent rendering across all PDF viewers (including those that handle form fields poorly), and is the recommended step before archiving or submitting a completed PDF form.
Can I flatten a password-protected PDF?
PDFs with usage restrictions (printing, copying, editing locked) can usually be processed. PDFs that require a password to open cannot. If your PDF opens freely in a PDF reader, it will work here.
Looking for other PDF tools? Try Password Protect PDF to lock your flattened document, Watermark PDF to stamp CONFIDENTIAL before sharing, or Compress PDF to reduce file size after flattening.