How do I format JSON with JsonCraft?
Simply paste your JSON into the left editor. JsonCraft automatically detects and formats it instantly. You can also manually click the 'Format' button in the toolbar to apply specific indentation or cleaning.
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What is JsonCraft?
JsonCraft is a professional-grade developer tool built to Format, Convert, and Compare JSON data with extreme speed. Whether you're debugging APIs, transforming data structures, or identifying subtle differences between payloads, JsonCraft provides a robust environment powered by Monaco Editor.
Blazing Fast
Optimized for speed. Format and validate massive JSON files (up to 10MB+) instantly with zero lag.
Privacy Focused
Everything runs locally in your browser. Your data never leaves your machine. No server-side logs, no tracking.
Multi-Format Support
Seamlessly convert between JSON, YAML, XML, and JS Objects. Standardizes data formats for your entire team.
| Feature | Specification |
|---|---|
| Editor Engine | Monaco (VS Code Core) |
| Data Privacy | Local Processing (Zero-Server) |
| Supported Formats | JSON, YAML, XML, JS Objects |
| Max Payload | 10MB+ (Optimized for Large Files) |
Pro Developer Tips
Auto-Format on Paste: Just paste your raw data; JsonCraft will instantly clean and validate it without extra clicks.
Quick Diff: Use Diff Mode to compare production vs development environment configurations instantly.
Frequently Asked Questions
Is my JSON data safe or sent to a server?
Yes, it is 100% safe. JsonCraft is a client-side only tool. All processing, formatting, and conversion happen directly in your browser. We never transmit your data to any external server.
How to convert JSON to YAML or XML?
Paste your JSON into the input area, then select your desired target format (YAML, XML, or JS Object) from the format dropdown in the toolbar. The converted result will appear instantly in the right-hand panel.
Can I compare two JSON files?
Yes! Switch to 'Diff Mode' using the toggle in the header. You can then paste two different JSON payloads to see a side-by-side visual difference with highlighted changes.
What is the maximum JSON file size supported?
JsonCraft is optimized to handle large JSON files up to 10MB or more, depending on your browser's memory. For extremely large files, we recommend using the 'Raw' toggle to disable heavy tree-view processing.