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Chapter EIGHTEEN. Making Your Documents Secure > TIP 143: Certifying a Document

TIP 143: Certifying a Document

One way to maintain a PDF document as a legally correct document is to certify it. When you certify a PDF document, you're certifying the contents and specifying the types of changes allowed that maintain the certification. For example, a form may be certified and allow the user to fill in the fields; however, if the user tries to delete or replace pages, the document will no longer be certified. Certification is one way of using Digital IDs. Make sure you have finished modifying your document before certifying it. Otherwise, changes you make may corrupt the signature.

Certify It or Sign It?

Decide when you need to certify a document and when you need to sign it. If you create a lot of documents for secure distribution, you may want to certify each document as you generate it.

However, be aware of the restrictions added to a document when you certify it. If you intend any of your recipients to make changes, such as additions or deletions, sign it and specify a reason, such as “I am the author” rather than certifying it (see Tip 144).



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