Google Magika — AI-Powered File Content Type Detection

• URL: https://www.threads.com/share/BAPJpVTjxZ/
• Date Saved: 2026-08-03
• Source: Threads (@bytesundries)
• Tags: security-privacy, ai-tools
• Repo: https://github.com/google/magika

Summary

Google open-sourced Magika, an AI-powered tool that detects the true content type of files regardless of file extension. Catches disguised malicious PDFs, hidden scripts, etc.

Technical details:

• Deep learning model trained on ~100 million samples
• Supports 200+ file types
• Millisecond-level detection speed
• ~99% accuracy
• Install: pip install magika
• 11K GitHub stars

Production usage:

Already deployed at Google scale for:

• Gmail attachment scanning
• Google Drive file scanning
• Safe Browsing file checks

Use cases for developers:

• Detect disguised/malicious files (wrong extension hiding real content)
• Security pipeline integration
• File upload validation
• Malware analysis preprocessing