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SafeTools
Technology 5 min read2026-04-15

Hidden in Plain Sight: A Guide to LSB Steganography

The mathematics of pixel mutation. Learn how we hide encrypted payloads inside image data using least significant bit encoding.

The mathematics of pixel mutation. Learn how we hide encrypted payloads inside image data using least significant bit encoding.

Key Takeaways

  • All file processing happens locally in your browser no server uploads required.
  • WebAssembly enables near-native performance for complex operations like image processing and PDF manipulation.
  • Privacy-first architecture eliminates data breach risk by design, not just by policy.

The local-first approach represents a fundamental shift in how web applications handle sensitive data. Rather than trusting third-party servers with your files, SafeTools processes everything using browser-native APIs, WebAssembly modules, and client-side AI models.

This architecture means your documents, images, and personal files never leave your device. The processing pipeline runs entirely within your browser's sandbox, providing the same level of privacy as a desktop application while maintaining the convenience of a web tool.

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