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Compare Documents with .NET & Java APIs

Easily detect and highlight differences between Word, Excel, PDF, PowerPoint and more. Conholdate.Total lets you compare text, formatting, tables & images, accept or reject changes, and export clean final documents — or try our free online document comparison tool.

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Powerful Document Comparison Libraries for Developers

Conholdate.Total for .NET & Java provides developers with robust document comparison features. Compare Word, PDF, Excel, PowerPoint, and images at paragraph, word, or character level. Detect formatting differences, track table or image edits, apply or reject changes, and generate clean, merged documents. Perfect for enterprise apps, automation, and quality control without needing Microsoft Office or third-party tools.

Key Features of the Document Comparison API

Multi-Level Comparison

Compare documents at paragraph, word, and character level. Detect even subtle formatting differences such as bold, italic, underlines, strike-throughs, and font changes.

Apply or Reject Changes

Accept or reject differences in compared documents programmatically, then export the final clean document.

Cross-Format Support

Work across Word, Excel, PowerPoint, PDF, and popular image formats. No Microsoft Office installation required.

Tables, Images & Shapes Detection

Identify changes in tables, images, shapes, and other non-text elements — ideal for business and legal use cases.

Comparison Summary Reports

Generate detailed summary reports listing all detected changes. Useful for audits, compliance, and collaboration workflows.

Customizable Change Highlights

Highlight changes with colors and styles. Default scheme:

  • Added – blue
  • Modified – green
  • Deleted – red Customize with italics, bold, or strike-through as needed.

Archive & Version Comparison

Compare multiple versions of the same document or archives of files to track revisions over time.

Cross-Platform Development

Build .NET (C#, VB.NET) or Java apps without external dependencies. Works seamlessly in Windows, Linux, Docker, and cloud environments.

Developer-Friendly Integration

Designed for productivity. Use with Visual Studio, IntelliJ IDEA, or Eclipse. Integrates smoothly into CI/CD pipelines for automated comparison workflows.

FAQs

Can I try the document comparison without coding?

Yes. Use our Free Online Document Comparison App to instantly test comparison features.

What file formats are supported?

Word, Excel, PowerPoint, PDF, and popular image formats like JPG, PNG, and TIFF are supported for comparison.

Can I customize the appearance of detected changes?

Absolutely. You can adjust colors, styles (bold, italic, strike-through), and formatting to match your workflow.

Is it possible to generate a report of all changes?

Yes. The API generates a summary report with a list of all detected differences.

Do I need Microsoft Office installed?

No. Conholdate.Total is a standalone API and does not require Microsoft Office or other third-party tools.

Can I compare tables and images too?

Yes. The API detects changes in tables, images, and shapes, not just text.

How easy is it to integrate with .NET or Java apps?

Very easy. The APIs are clean and intuitive, with full support for Visual Studio, IntelliJ IDEA, and Eclipse.

Does the API work in cloud or container environments?

Yes. Conholdate.Total works in Docker containers, cloud services, and on-premises setups, making it flexible for enterprise use.

Can I use it for large documents?

Yes. The API is optimized to handle large enterprise-level documents efficiently.

Support and Learning Resources

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