> For the complete documentation index, see [llms.txt](https://docs.emudhradigital.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emudhradigital.com/documentation/digital-signature-validation-tool.md).

# Digital Signature Validation Tool

The **Digital Signature Validation Tool** verifies signatures on PDF, XML and CMS data — integrity, certificate chain, revocation and timestamp — through a web tool, an API or an on-premises deployment.

In this section:

* **Validation Tool Overview** — supported inputs and users
* **What Gets Validated** — checks and statuses
* **Using the Validation Tool** — web tool and report
* **Validation API** — automated validation