YAML Linter
Validates YAML (including multi-document files), points at the exact line and column when parsing fails, warns about tab indentation, and shows the normalized YAML and JSON equivalent for anything valid.
Runs 100% in your browser — nothing you paste leaves your device.
Read the full guide to this tool
Notes
- The most common YAML errors are tabs instead of spaces and inconsistent indentation depth.
- Parsing uses js-yaml (safe mode) loaded on demand — no code execution, no custom tags.
- Runs 100% in your browser — nothing you paste leaves your device.
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