PDFPenguinPDFPenguin

Flatten PDF forms and annotations into the page content. Make fillable forms non-editable. Fast, secure, and free.

Flatten PDF

Select a PDF file to start

Security
TLS encryption • Auto-delete after 1 hour • No data mining
Compatibility
Works on Mac, Windows, Linux, iOS, Android • No installation

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FAQs

What does flattening do?
Flattening merges fillable forms and annotations into the main page content, making them non-editable.
Can I un-flatten?
No, flattening is a permanent process. It is recommended to keep your original file.
Is it secure?
Yes, we process files locally or securely and delete them after processing.