Flatten PDF Form Fields
Lock fillable form controls, signatures, and annotations into permanent, non-editable page graphics. 100% private and court-compliant.
Select or drop a fillable PDF to flatten
Permanently lock interactive form fields, checkboxes, and signatures into non-editable page graphics for contracts and official filing.
How to Flatten a PDF in 3 Steps
Select Document
Choose your fillable PDF. The browser instantly scans all AcroForm text fields, checkboxes, and buttons.
Review Form Structure
Review the field breakdown and click 'Flatten & Lock Form Fields' to bake entries into page vector elements.
Download Tamper-Proof PDF
Preview your finalized document and download a secure, submission-ready PDF.
Frequently Asked Questions
Common questions about flattening PDF documents and form fields.
What does it mean to flatten a PDF?▾
Flattening a PDF merges interactive form widgets (text fields, checkboxes, radio buttons, dropdowns, and digital signature boxes) directly into the document's static page layer. Once flattened, the entries become permanent visual content and cannot be clicked or edited.
Why should I flatten a PDF contract before sending it?▾
If you send an unflattened PDF contract or agreement, the recipient can click into your filled-in text boxes and change numbers, names, or terms in their PDF reader. Flattening prevents tampering and guarantees that the document renders identically across all devices and printers.
Why do courts and government portals require flattened PDFs?▾
Legal and court filing systems (such as CM/ECF and patent offices) mandate flattened PDFs to prevent hidden form scripts, automated recalculations, or unauthorized post-submission edits. Flattened documents are fully archived and tamper-proof.
Will flattening my PDF remove images or text?▾
No. All entered values, signatures, checkmarks, text, fonts, and images are preserved exactly as they appear on screen. Only the interactive 'editing capability' of the form fields is removed.
Are my confidential legal documents uploaded to an external server?▾
No. All form parsing and flattening run 100% in your local browser memory via WebAssembly and Web Crypto. Your sensitive contracts, tax records, and legal forms never leave your device.
100% Private
Contracts and confidential financial records are processed entirely in browser RAM with zero server exposure.
Tamper-Proof Output
Lock inputs so no recipient can change or clear your completed form responses.
Universal Compatibility
Ensures all mobile viewers, email previewers, and office printers display your form data without blank fields.