What does flattening a PDF do?

Flattening bakes interactive text fields, checkmarks, signatures, and annotations directly into the page canvas so they cannot be edited or altered by third parties.

Processed 100% locally on your device — No file upload

Flatten PDF

Convert all editable form fields, digital signatures, stamps, and annotations into static, non-editable PDF graphics. 100% private in-browser processing.

Select PDF to Flatten

Lock in form entries, signatures, and annotations