Based on our record, JSignPdf should be more popular than Aspose.PDF for Java. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The linked answer only adds an image, not a proper digital signature. But you can use https://sourceforge.net/projects/jsignpdf/. - Source: Hacker News / almost 4 years ago
- JSignPDF https://sourceforge.net/projects/jsignpdf/. Source: about 4 years ago
One option is https://products.aspose.com/pdf/java/. Source: almost 3 years ago
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