Lock fillable form fields, checkboxes, and signatures into non-editable static PDF layers.
password-protect PDFSending a filled PDF form while fields remain interactive allows anyone to alter your answers, check different boxes, or tamper with signature fields. Flattening a PDF merges interactive form elements directly into the page stream, rendering the document 100% read-only and tamper-proof.
Select your completed interactive PDF form.
Merges form fields into static page content.
Save your secure, non-editable PDF.
Locks text fields, drop downs, and radio buttons.
Flattens digital signatures into permanent image layers.
No software required to flatten form layers.
Ensures forms render identically across all readers.
Lock completed IRS and tax return form fields.
Flatten patient health history questionnaires.
Lock signed job application form data.
Read-only document security
It prevents recipients from modifying filled-in text boxes or altering checked options.