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JSON Linter

Lint JSON and catch common mistakes fast.

How to Use This Tool

  1. Paste JSON.
  2. Click Lint JSON.
  3. Review results.

Learn More About JSON Linter

What is JSON linting?

Linting checks JSON for errors and common issues so you can ship reliable data.

About JSON Linter

Linting helps detect syntax errors and basic structural issues in JSON before it reaches production. This tool provides a quick lint report to keep data clean.
Lint JSON to detect errors and warnings.
Runs in browser
Yes
Errors
Syntax
Warnings
Basic checks

Examples

Lint a JSON payload

Detect invalid JSON quickly.
Input
{"id":1,}
Output
Invalid JSON: ...

Features

Instant validation

Detect invalid JSON quickly.

Warnings

Surface basic lint warnings for top-level values.

Private

Runs in your browser only.

Use Cases

  • Validate API responses.
  • Check configuration files before deployment.
  • Catch formatting errors during development.

Frequently Asked Questions

Related Tools

Use the formatter and fixer for clean JSON workflows.