Processed locally — no upload
Flatten PDF
Lock in filled form fields, checkboxes, and annotations so they cannot be altered or clicked. Converts interactive widgets into fixed static content.
Drop your PDF here
or browse from your computer
Supports: .PDF
Key Features of Flatten PDF
Locks form inputs permanently
Renders annotations uneditable
Prevents tampering
Ensures consistent printing
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No registration or download queues
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Frequently Asked Questions
Everything you need to know about our browser-side PDF architecture.
Flattening converts form fields and annotations into static graphic elements, preventing anyone from editing your entered data.