Help > Learning Resources > Hacks in creating PDFs > How to lock a PDF form after signing it

How to lock a PDF form after signing it

Once an e-signature is placed in a document, you can easily lock the document or parts of it to prevent any subsequent changes and ensure security.

To lock your PDF form please follow the steps below:

Step 1. Open a PDF in Adobe Acrobat Pro and select the Prepare Form mode:

Step 2. Double click on the designated Signature field to open its Properties and under the Signed tab choose option Mark as read only. Select either from three options: All fields, All fields except these or Just these fields, depending on the needs:

Step 3. Save changes to the PDF and upload it to the storage folder that is used in a workflow.

As a result, after your document is signed, it will get locked from further changes.

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