JSON Tools

JSON Validator

Check JSON syntax errors and get precise error locations instantly.

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How to Use JSON Validator

  1. Enter or paste your input in the text area above
  2. The tool will process your input automatically or click the action button
  3. Copy the result using the copy button

Frequently Asked Questions

What does this tool check?

This tool validates JSON syntax according to the JSON specification. It checks for proper formatting, correct use of quotes, commas, brackets, and braces.

What are common JSON errors?

Common errors include missing commas, trailing commas, single quotes instead of double quotes, unquoted property names, and missing closing brackets.

Is my data safe?

Yes! All validation happens in your browser. Your data never leaves your computer.

Sources & references

Primary references: RFC 8259: The JavaScript Object Notation (JSON) Data Interchange Format.

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