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Flatten PDF

Flatten form fields and annotations into static content so they cannot be edited.

Flattening bakes all form fields, checkboxes, and annotations into static content. The resulting PDF can no longer be filled or edited — ideal for archiving or sharing final versions.

Click or drag a PDF here

Works best on PDFs with fillable forms

Max 100 MB per file

How it works

Upload a PDF with fillable form fields or annotations and click Flatten. The tool bakes all interactive elements into the page as static content, making the PDF read-only and preventing any further editing.

Why use this tool?

Flattening is required when submitting completed forms to government agencies or clients who shouldn't be able to modify the data. Prevents accidental changes to signed or completed PDFs.

Frequently Asked Questions

What does flattening do exactly?

Flattening merges interactive form fields, annotations, and signature layers into the base page content, converting them to static graphics. The PDF becomes read-only — form fields can no longer be edited.

When should I flatten a PDF?

Before submitting completed forms to government agencies, banks, or clients who shouldn't be able to modify the data. Also useful before archiving documents to ensure they look the same in all future PDF readers.

Is my PDF private?

Yes. Flattening happens entirely in your browser. Your document is never uploaded to any server.

Is this free?

Yes, completely free with no watermark on the flattened PDF.

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