.NET API to Redact Documents

This .NET component makes it very easy to remove classified or sensitive data from documents via your own .NET apps. Multiple redaction types are supported.

Document Redaction Processing Features

Remove classified or sensitive information from the documents.
Remove document metadata and annotations.
Make a rasterized PDF version of the redacted document for better security.
Keep the document in its original format after the redaction process.
Set the redaction scope to a specific worksheet or column.
Apply multiple redaction in a single call.
Modify compliance level from PDF/A-1b to PDF/A-1a during rasterizing PDF.

Enhancements in the Version 20.7

Ability to redact embedded images in PDF, textual and presentation documents.
Allow ImageAreaRedaction to be applied to rasterized PDF.
Added support for embedded image redaction with Aspose.Words.
Added support for embedded image redaction with Aspose.Slides.

For the detailed notes, please visit GroupDocs.Redaction for .NET 20.7 Release Notes.

Document Body & Metadata Redaction Formats

Microsoft Word: DOC, DOT, DOCX, DOCM, DOTX, DOTM, RTF
Microsoft Excel: XLSX, XLSM, XLTX, XLTM, XLS, XLT, CSV
Microsoft PowerPoint: PPT, PPTX, PPSX, POT, PPS, PPTM, PPSM, POTM
Image: JPEG, TIF, TIFF, PNG, BMP, GIF
Fixed Layout: PDF

Annotations (Comments) Redaction Formats

Supported Redaction Types

Text: Replace or hide a textual area within the document body with a colored block.
Metadata: Replace metadata values with empty ones or redact metadata values.
Annotation: Remove annotations from the document or redact their content.
Image: Replace specific area of an image with a colored box.

Platform Independence

GroupDocs.Redaction for .NET does not require any external software or third party tool to be installed. GroupDocs.Redaction for .NET supports any 32-bit or 64-bit operating system where .NET or Mono framework is installed. The other details are as follows:

Microsoft Windows: Microsoft Windows Desktop (x86, x64) (XP & up), Microsoft Windows Server (x86, x64) (2000 & up), Windows Azure
macOS: Mac OS X
Linux: Linux (Ubuntu, OpenSUSE, CentOS and others)
Development Environments: Microsoft Visual Studio (2010 & up), Xamarin.Android, Xamarin.IOS, Xamarin.Mac, MonoDevelop 2.4 and later.
Supported Frameworks: GroupDocs.Redaction for .NET supports .NET and Mono frameworks.

Perform Exact Phrase Case Sensitive Redaction

// For complete examples and data files, please go to https://github.com/groupdocs-redaction/GroupDocs.Redaction-for-.NET
using (Redactor redactor = new Redactor(@"template.docx"))
{
  redactor.Apply(new ExactPhraseRedaction("John Doe", true /*isCaseSensitive*/, new ReplacementOptions("[personal]")));
  redactor.Save();
}

Redact Specific String from Annotations

using (Redactor redactor = new Redactor(@"template.pdf"))
{
   redactor.Apply(new AnnotationRedaction("(?im:john)", "[redacted]"));
   redactor.Save()
}