Compress PDFUA format using C#

PDFUA Compression Overview

Aspose.ZIP for .NET provides a fully managed C# API for compressing PDFUA documents in server-side and desktop applications. It supports batch operations, stream I/O, and configurable compression settings for predictable outputs. This is handy when bundling documents for transfer or retention. Create ZIP, 7Zip, TAR, GZIP, and other archives without external utilities, and use encryption options when you need to protect PDFUA data. This provides a practical way to automate packaging and reduce storage footprints in .NET solutions.

  PM> Install-Package Aspose.ZIP

C# Example: Create a ZIP Archive from PDFUA Files

The snippet below shows the core API steps to compress a PDFUA file: create an Archive object, add the entry, and save the resulting ZIP.

Compress PDFUA file via .NET:

    var dir = "full directory path";
    using (var arch = new Archive())
    {
    arch.CreateEntry("filename.pdfua", dir+"file.pdfua");
    arch.Save(dir+"archived_result.zip");
    }

FAQ

Can I compress multiple PDFUA files into a single ZIP archive using C#

1. Yes. Aspose.ZIP for .NET allows you to load and compress multiple PDFUA files by adding each file as an entry to the Archive object. You can combine individual files, folders, or streams into a single ZIP archive through a straightforward C# workflow.

Does Aspose.ZIP for .NET reduce the original quality of PDFUA files?

2. No. Aspose.ZIP performs lossless compression, meaning that the content and quality of your PDFUA files remain unchanged. The library only reduces file size by applying efficient archive compression algorithms without altering the actual data inside the file.

Can I password-protect ZIP archives that contain PDFUA files?

3. Yes. The library supports password protection and AES encryption, allowing you to securely package sensitive PDFUA files. You can specify encryption settings when creating entries or during the archive-generation process.