JSON Lab Technical Documentation

JSON Lab is an online JSON parser and converter optimized for speed and reliability. It supports formatting, minifying, JSONPath query, tree visualization, API testing, and code snippets across multiple languages.

Features Overview

• Format and minify JSON with smart fallback for large files
• JSONPath query with instant results and error feedback
• Tree visualization and table view for arrays of objects
• API testing with configurable method, headers and body
• Local history to save and restore previous inputs

Large File Handling

Real-time parsing is automatically disabled when input size exceeds the configured capacity to prevent memory pressure. Formatting/minifying still works via streaming workers with progress updates and fallback to main thread.

Performance Best Practices

• Use minify for transfer and format on demand
• Prefer JSONPath queries over full traversal for targeted data
• Adjust capacity in Settings responsibly to avoid excessive memory usage
• Leverage code snippets to integrate parsing in your environment

Security Considerations

• Inputs are processed client-side and not uploaded to servers
• Feedback data is stored locally and can be cleared at any time
• API tester sends requests directly to target URLs; handle tokens with caution
• Content Security Policy and Referrer Policy are applied to reduce risk

FAQ and Support

See the FAQ page for common questions on parsing errors, large data, and browser compatibility. For issues or suggestions, use the Feedback page or email the address provided there.