This is indirect access to this service. Please refer to the corresponding SDK below. GroupDocs.Redaction for .NET is a feature-rich document redaction API for PDF, raster images and Microsoft Office file formats. Ensure the privacy of your private documents by hiding or removing confidential information even from password protected files using text, metadata and annotation (comments) redaction types. You can save document in the original format and create a new PDF file with raster images of redacted document pages.