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Flatten PDF Online – for Free

Flatten your PDF layers, form fields, and signatures into a single, non-editable document in seconds. Our free online PDF flattener makes your files secure, shareable, and ready for printing — no sign-up required.

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Why Flatten PDFs with PDFEase?

Professional-grade flattening with full privacy and unlimited free use.

1

Permanent Read-Only

Locks content to prevent any future changes or tampering.

2

Perfect Printing

Ensures annotations and fields print exactly as shown.

3

100% Free & Unlimited

No watermarks, no signup, no limits—flatten as many as needed.

What Flattening Does

  • Merges form fields & entered data
  • Embeds annotations & comments
  • Flattens signatures & stamps
  • Removes interactive layers

Common Use Cases

  • Finalized contracts & agreements
  • Completed tax forms & invoices
  • Signed applications & permits
  • Architectural & engineering drawings
  • Annotated reports & reviews

Frequently Asked Questions

Is flattening reversible?

No—flattening is permanent. Always keep your original editable PDF as backup.

Does it affect text searchability?

Original document text remains searchable. Only new form field entries become non-selectable.

Will file size change?

Often decreases by removing complex interactive objects.

Is my PDF secure?

Yes—end-to-end encryption and automatic deletion after processing.

Protect & Archive Your Work

Now that your document layers are merged and form fields are locked, ensure your PDF is ready for long-term storage or secure digital distribution.

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Ready to Lock Your PDF?

Flatten layers permanently in seconds—no software needed.