Key Features of GroupDocs.Redaction for .NET

Clean Metadata in PDF Files with .NET

Protect sensitive business and personal information in PDF files using C#. Easy-to-use tools for reliable data protection.

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Remove Metadata from Pdf Documents

Use GroupDocs.Redaction to quickly secure document metadata in your .NET apps.

Create a Redactor instance and load your Pdf file.
Set up redaction to remove all hidden metadata.
Apply the redaction to clean the document.
Save the updated file.

Sample redactions Copy

// Erase metadata from PDF files

// Load the file with Redactor
using (Redactor redactor  = new Redactor("input.pdf"))
{
    // Configure metadata removal redaction
    var redaction = new EraseMetadataRedaction(MetadataFilters.All);
    
    // Apply changes and save the file
    redactor.Apply(redaction);
    redactor.Save();
}

dotnet add package GroupDocs.Redaction

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Redact Sensitive Data in Documents

GroupDocs.Redaction for .NET helps you hide or erase confidential content in various file formats. Keep private data safe while keeping documents clear and professional.

Find and Replace Text

Search for sensitive text in your documents and replace or remove it to protect privacy.

Hide Image Content

Add overlays to images or specific areas to cover sensitive visuals.

Clean Metadata

Delete or edit hidden metadata to prevent unwanted data leaks.

Remove Hidden Metadata Entries

This example shows how to modify metadata in a PDF file.

C#

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//  Load the PDF file into the redactor
using (Redactor redactor  = new Redactor("source.pdf"))
{
    // Set up redaction for the Author property
    MetadataSearchRedaction redactionAuthor = 
        new MetadataSearchRedaction(@"[A-Za-z0-9 ]+", "GroupDocs Company")
    {
        Filter = MetadataFilters.Author
    };

    // Set up redaction for the Title property
    MetadataSearchRedaction redactionTitle = 
        new MetadataSearchRedaction(@"[A-Za-z0-9 ]+", "GroupDocs.Redaction Usage")
    {
        Filter = MetadataFilters.Title
    };

    // Run redaction on the document
    var redactions = new MetadataSearchRedaction[] { redactionAuthor, redactionTitle };
    redactor.Apply(redactions);

    // Save the cleaned file
    var saveOptions = new SaveOptions() { AddSuffix = true, RasterizeToPDF = false };
    var outputPath = redactor.Save(saveOptions);
}