Release Highlights

Aspose.ZIP for .NET 25.3 delivers extended archive format support, security enhancements, and metadata improvements—pushing archive extraction accuracy and flexibility further.

✳️ New Feature

• LZ4 Archive Extraction:
  • Added full support for extracting .lz4 compressed files using the new Lz4Archive class.
  • Key methods:
    • Extract()
    • ExtractToDirectory()
    • Open(): Provides access to the decompressed stream.

🔧 Enhancement

• Archive Format Detection:

  • The IArchive.Format property now allows developers to identify the format of an opened archive dynamically—ideal for format-agnostic workflows.

• Time Metadata Handling:

  • Time metadata is now retained for a wider range of archive formats, including encrypted 7z files and gzip archives opened through format detection.

• Secure Temp File Handling:

  • Improved how temporary files are composed internally to strengthen file-system security.

🛠 Fix

• 7z Extraction Edge Case:

  • Fixed infinite extraction issue when attempting to open certain password-protected 7z archives with incorrect credentials.

• File Entry List Accuracy:

  • Directory entries are now properly filtered out from FileEntries to prevent incorrect inclusion in file-specific logic.

👉 You can view the full list of updates by visiting Aspose.ZIP for .NET 25.3 Release Notes

lz4 archive extract | archive format detection | 7z password fix | gzip name via format detector