Itext pdf stamping memory

Current, I succeeded stamping a PDF. However, if the document is previously signed the signature is no longer valid. I understand why that happens, but if I use Acrobat to add text or stamp it using annotation, the signature is valid. I tried adding annotations or comments but it still invalidates the signature. Is there a way to add stamp to a PDF using iText without invalidating digital signatures? Here is the code used to add custom text to document using iText without invalidating digital signatures.

For inserting image stamp to the document without invalidating the digital signatures I used this code:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.

Learn more. Asked 6 years, 8 months ago. Active 6 years, 8 months ago. Viewed 5k times. Add new Paragraph "iText is:". SetSymbolIndent SetListSymbol "u". Add new ListItem "Never gonna give you up". Add new ListItem "Never gonna let you down". Add new ListItem "Never gonna run around and desert you". Add new ListItem "Never gonna make you cry". Add new ListItem "Never gonna say goodbye". Instantiate the PdfDocument class by passing the above created PdfWriter object to its constructor, as shown below.

Once a PdfDocument object is created, you can add various elements like page, font, file attachment, and event handler using the respective methods provided by its class. The Document class of the package com.

One of the constructors of this class accepts an object of the class PdfDocument. It creates a PDF document with the name addingImage. Previous Page. Next Page. Previous Page Print Page. Save Close.