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  3. YAML Validator

YAML Validator & Converter

Validate YAML and convert between YAML and JSON

✓ Valid YAML

Related Tools

  • JSON Formatter - format converted JSON
  • CSV to JSON - convert other data formats
  • Diff Checker - compare YAML configurations
  • JSONL Formatter - work with line-delimited data

How to Use YAML Validator

  1. Paste your YAML

    Enter or paste YAML content to validate and convert.

  2. Check for errors

    See validation results and any syntax errors highlighted.

  3. Convert to JSON

    View your YAML converted to JSON format and copy either version.

Frequently Asked Questions

Is this YAML Validator free to use?
Yes, the YAML Validator is completely free with no limitations. Validate YAML syntax and convert between YAML and JSON without any registration or usage restrictions.
Is my YAML data private?
Yes, all YAML parsing and validation happens locally in your browser. Your configuration files, which often contain sensitive settings, database credentials, or API keys, never leave your device.
What is YAML used for?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used for configuration files, CI/CD pipelines (GitHub Actions, GitLab CI), infrastructure as code (Kubernetes, Docker Compose, Ansible), and data exchange. Its clean syntax makes it easier to read and write than JSON for configuration purposes.
Why would I convert YAML to JSON?
Converting YAML to JSON is useful when you need to use YAML configuration with JSON-only APIs, validate YAML structure programmatically, or debug complex YAML files by viewing them in JSON format. JSON is also more widely supported by programming languages and tools.