JSON Schema Validator

Validate JSON against schema with detailed error messages and line numbers.

JSON Input

0 lines

Features

  • ✓ Validate JSON against schema
  • 📍 Show error line numbers
  • 💡 Detailed error messages
  • ✨ Auto-format valid JSON
  • 📊 Show JSON statistics
  • ⚡ Real-time validation
  • 🔒 All processing done locally
  • 🌙 Dark mode support

How to Use

  1. Paste JSON - Enter your JSON in the input area
  2. Validate - Click "Validate JSON" button
  3. Check Result - See if JSON is valid or view errors
  4. Format - Click "Format" to beautify valid JSON

About JSON Validation

JSON (JavaScript Object Notation) is a lightweight data format. Valid JSON must follow strict syntax rules.

Common JSON Errors

  • Missing or extra commas
  • Unquoted keys
  • Single quotes instead of double quotes
  • Trailing commas
  • Missing closing brackets
✓ Success!