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JSON Validator

Validate your JSON syntax and analyze structure instantly.

Input Source
Loading editor...
Lines: 0Chars: 0
0 B
Validation Status
Enter JSON data on the left to validate

What is the JSON Validator?

The JSON Validator checks your data structure against RFC 8259 specifications. It diagnoses parsing issues and highlights the exact location of syntax errors.

How to Use the Tool

  1. Paste your JSON text inside the validator input editor.
  2. If the syntax contains errors, the validator displays detailed error descriptions, line numbers, and column offsets.
  3. If the JSON is valid, a success confirmation is printed.

Common Use Cases

  • Verifying API call responses and request payloads.
  • Troubleshooting configuration crashes in Node or server runtimes.
  • Checking for trailing commas inside list objects.

Supported Formats & Options

Supports RFC 8259 syntax validation. Analyzes missing object quotes, single quote mistakes, trailing commas, unescaped control characters, and mismatched brackets.

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Frequently Asked Questions

How does the validator work?

It parses your JSON and highlights precise syntax errors if any exist. It also outputs metadata like character count and file size.