Lossless JSON Pretty Printer

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Pretty-prints JSON strings without parsing, preserving BigInt literals and decimal precision while handling malformed input gracefully.

🔧 Handles Invalid JSON 📦 BigInt Support ⚡ Zero Dependencies 🎨 Custom Indentation

📝 Input JSON

0 characters

✨ Formatted Output

Formatted JSON will appear here...
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Input Characters
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Output Characters
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Compression
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Format Time

🎯 Sample Data

Click the buttons below to load example JSON data for testing: