Does Telerik Document Processing Library provides incremental update in pdf documents

[John]

Hi,

We would like to know if we can add extra fields to a signed pdf document without invalidating the signatures and also if we open the pdf to be able to trace the addons.  

Please see the attached image.

If possible provide us  sample code how we can achieve that in case your library has this functionality

thanks

john

[Yoan]

Hi John,

Modifying a PDF document in any way invalidates its signature by default, so it won't be possible to meet the requirements you are describing. That being said, if you are still interested in adding fields to a PDF document, the FormFields article would be a good place to start and get familiar with the functionality.

Tracking changes in a PDF document is not a functionality that comes out of the box. A way to track revisions made to a PDF is to save the changes as a separate document, thus creating and storing multiple copies of the file after each modification. Then the various file versions of the PDF must be manually compared to track the changes made.

If you happen to need any further assistance, go ahead and contact us.

Regards, Yoan Progress Telerik