JSignPdf

JSignPdf, currently in its latest version 2.2.2, is a robust application developed by Josef Cacek for managing digital signatures in PDF documents. This Office Tools software, under the Document management subcategory, offers a versatile solution for adding digital signatures to PDF files. The executable file, JSignPdf.exe, can be utilized on various supported operating systems, including Windows XP, XP Professional, Vista, 7, 8, 10, and 11.

One of the standout features of JSignPdf is its capability to function as both a standalone application and an Add-On for OpenOffice.org. This is thanks to its reliance on the jsignpdf-itxt library, which is an iteration of the iText library (specifically version 2.1.7) licensed under LGPL/MPL. Users searching for a comprehensive document management tool will find this feature list quite enticing: visible signatures that can be fine-tuned in terms of image and description location, several Java-provided keystore types, and timestamps from authorities incorporated within signatures (TSA).

Additionally, JSignPdf supports certificate validation through CRL and/or OCSP, setting certification levels, choosing hash algorithms, and offering PDF encryption and rights management. The program also boasts a comprehensive Swing GUI for those who prefer graphical interfaces, and batch processing capabilities controlled by command line arguments for those who need to handle multiple files simultaneously. More

You may want to check out more software, such as signature995, XML Viewer or BusinessCardsMX, which might be similar to JSignPdf.