Express Lint

About Express Lint

Express Lint is a comprehensive suite of developer tools designed for modern web development workflows. Our mission is to provide the fastest, most reliable JSON validation, text comparison, and formatting experience while maintaining complete privacy and security for your sensitive data.

100% Private

All processing happens locally in your browser. We never send your data to any server, ensuring complete privacy for sensitive code and configurations.

Lightning Fast

No network requests means instant validation, formatting, and diff comparison. Works perfectly offline and handles large files efficiently.

Developer Focused

Built by developers, for developers. Features keyboard shortcuts, GitHub-style diffs, intelligent error recovery, and professional interfaces.

Advanced Comparison

Character-level diff highlighting, split and unified views, difference navigation, and support for multiple file formats.

Key Features

✓Advanced JSON syntax validation with intelligent error detection
✓Automatic JSON repair for common syntax errors
✓Character-level text diff highlighting with precision accuracy
✓GitHub-style split and unified diff views
✓Navigation between differences with keyboard shortcuts
✓Real-time syntax highlighting with line numbers
✓Drag and drop file support for JSON and text files
✓Complete client-side processing for maximum privacy
✓Dark mode interface optimized for developers
✓No data storage or tracking - your content stays private
✓Professional interface designed for developer workflows
✓Intelligent whitespace and formatting detection
✓Export and copy functionality for processed content
✓Mobile-friendly responsive design
✓Offline functionality - works without internet
✓Advanced error recovery and formatting suggestions

Why Express Lint?

For DevOps Engineers: Validate configuration files, compare deployment scripts, and debug JSON APIs with confidence.

For Frontend Developers: Debug API responses, validate form data, and compare component configurations with precision.

For Backend Developers: Test JSON schemas, validate API payloads, and compare database configurations efficiently.

Technical Excellence

Performance

  • • Zero server dependencies
  • • Optimized for large file handling
  • • Efficient diff algorithms
  • • Lazy loading and code splitting
  • • Progressive Web App ready

Contact

Have questions or feedback? We'd love to hear from you at zkncpt@gmail.com