Before you certify a PDF

Document authors can improve document integrity and ensure that their documents remain certified by addressing the following issues before they certify PDFs:

• Disable or remove content that could modify the document or compromise its integrity, such as JavaScripts, actions, or embedded media.

• If you intend for others to sign the document, enable usage rights to let Adobe Reader users add a digital signature (choose Advanced > Enable Usage Rights In Adobe Reader).

• • Certify or sign a PDF only after you make final changes to it. If you make changes or resave the PDF after you sign it, you may compromise the validity of your signature or the document’s certified status.

• Document authors can use Adobe LiveCycle Designer (Windows) to create signature fields that lock after signing, preventing changes that may invalidate signatures. For more information, see Adobe LiveCycle Designer Help.