Redaction for Java

Protect Confidential Data with GroupDocs.Redaction

Easily remove private data, redact text, and clean metadata from PDFs, Word, Excel, PowerPoint, and image formats using the reliable Java toolkit.

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Version 24.6 Released

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// Load your source file with a Redactor instance
final Redactor redactor = new Redactor("sample.pdf");
try
{
    // Define the redaction criteria and settings
    ReplacementOptions ro = new ReplacementOptions("[redacted]");
    ExactPhraseRedaction red = new ExactPhraseRedaction("Data", ro);

    // Execute the redaction operation
    RedactorChangeLog result = redactor.apply(red);

    // Save the file with redactions applied
    redactor.save();
}
finally { redactor.close(); }

<dependency>
<groupId>com.groupdocs</groupId>
<artifactId>groupdocs-redaction</artifactId>
<version>24.6</version>
</dependency>

GroupDocs.Redaction at a Glance

Enhance your Java applications with professional redaction tools

Remove Sensitive Text

With GroupDocs.Redaction for Java, you can search for and conceal private text using customizable overlays or replacements. Compatible with PDFs, Word, Excel, and more, it’s ideal for regulatory compliance and secure document sharing.

Conceal Images

Identify and mask images completely or partially based on your requirements. Define detection rules and area coordinates to secure visual data efficiently.

Clean Embedded Metadata

Files may carry hidden information such as author names, creation tools, or device details. GroupDocs.Redaction for Java lets you detect and sanitize metadata in Word, Excel, images, and other formats.

Redact Embedded Objects

Thoroughly sanitize documents by redacting objects like PDF annotations, comments, or other embedded items to eliminate any trace of confidential information.

Platform Independence

GroupDocs.Redaction for Java works across major operating systems, frameworks, and development platforms.

Supported File Formats

GroupDocs.Redaction for Java supports working with the following file formats.

MS Office Formats

Word: DOCX, DOC, DOCM, DOT, DOTX, DOTM,
Excel: XLSX, XLS, XLSM, XLSB,
PowerPoint: PPT, PPTX

Other Office Formats

Portable: PDF
OpenDocument: ODT, ODS, OTS, ODP, OTT
Text Formats: RTF, CSV, TXT, TSV

Other Formats

Web: HTM, HTML, MD
Images: BMP, GIF, JPEG, PNG, TIFF, WEBP
eBooks: DJVU

What You Can Do with GroupDocs.Redaction

Quickly locate and redact content from PDFs, Office documents, and images with precision.

Search with Precision

Use case-sensitive and case-insensitive search modes to find and redact exact matches.

Find and Replace Text

Automatically detect and substitute or delete confidential text across the document.

Overlay with Custom Images

Use image blocks to obscure redacted text, preserving layout while hiding details.

Use Regex for Advanced Redaction

Utilize regular expressions to detect complex patterns and redact intelligently.

Redact Specific Areas

Limit redaction to selected pages or zones by defining precise areas to target.

Scrub Metadata Fields

Identify and clean document metadata, including author, company, or tracking data.

Export in Desired Format

Save your redacted files in PDF or another supported format without losing layout integrity.

Wipe All Metadata

Completely remove metadata from supported files in just one command.

Automated Redaction Policies

Create reusable redaction configurations stored in XML for consistent, batch redaction.

Code Samples

Common GroupDocs.Redaction for Java use case examples

Redaction Using Regex

GroupDocs.Redaction for Java empowers Java developers to apply regex-based redaction with optional image masking:

Redact Word Documents Using Regular Expressions

// Create an instance of the Redactor class
final Redactor redactor = new Redactor("source.docx");
try
{
    // Define redaction rules using a regular expression
    ReplacementOptions replacement = new ReplacementOptions(java.awt.Color.BLUE);
    RegexRedaction redaction = new RegexRedaction("\\d{2}\\s*\\d{2}[^\\d]*\\d{6}", replacement);

    // Mask all matching text with blue square overlays
    redactor.apply(redaction);

    // Save the redacted Word document
    redactor.save();
}
finally { redactor.close(); }

Remove All Metadata

With our API, you can delete metadata across multiple file types in one step:

Remove All Metadata from Presentations

// Provide the path of the presentation to Redactor
final Redactor redactor  = new Redactor("source.pptx");
try 
{
    // Configure the redaction options
    EraseMetadataRedaction red = new EraseMetadataRedaction(MetadataFilters.All);

    // Erase all metadata from the presentation
    redactor.apply(red);

    // Save the cleaned presentation file
    redactor.save();
}
finally { redactor.close(); }