Compress MHTML format using C#

MHTML Compression Overview

With Aspose.ZIP for .NET, you can compress MHTML documents using a clean, fully managed C# API for server and desktop workflows. The API handles single items or directories, supports stream-based input, and gives control over compression settings and output structure. 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 MHTML 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 MHTML Files

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

Compress MHTML file via .NET:

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

FAQ

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

1. Yes. Aspose.ZIP for .NET allows you to load and compress multiple MHTML 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 MHTML files?

2. No. Aspose.ZIP performs lossless compression, meaning that the content and quality of your MHTML 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 MHTML files?

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