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Flatten PDF
Flatten form fields into a stable PDF copy. Your files stay on your device during processing.
Private local processing
Your file stays in this browser.
About Flatten PDF
Flatten a PDF's compatible interactive form fields into the page itself, turning a fillable form into a stable, non-editable document.
What the result contains
A PDF in which compatible interactive form fields are painted into the pages and are no longer editable controls.
Supported formats
How to use Flatten PDF
- Open the completed PDF form you want to lock.
- Run flatten and let compatible AcroForm fields be painted into the page content.
- Check that entered values are still visible and correctly placed.
- Download the flattened copy; keep the original if further edits might still be needed.
Practical example
Flatten a completed application form before sending a stable copy to another person.
When to use Flatten PDF
- Lock a completed application form before emailing it onward
- Prepare a filled contract so its fields can no longer be changed
- Finalize an internal form before archiving it alongside other records
Important limitations
- Only compatible PDF form fields are flattened; unrelated annotations or layers may remain.
- Flattening is difficult to reverse, so retain the unflattened source when future edits may be needed.
Troubleshooting Flatten PDF
The tool reports no compatible form fields
Confirm the document contains AcroForm fields rather than printed blanks or an XFA form.
Private local processing
The file is processed on this device and is not uploaded to MyFileNest. Closing or refreshing the page clears the active session.
Frequently asked questions
Practical limit: Files up to 25 MB are accepted for guests. Very large dimensions, complex documents or limited device memory can affect browser processing.