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YAML Validator
Check YAML syntax and pinpoint indentation and formatting errors.
- Runs in your browser
- Instant results
- Free, no sign-up
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How to use the YAML Validator
- Paste your YAML.
- Read the result; errors show the line, column and a pointer.
- Check the parsed JSON to confirm the structure.
Frequently asked questions
What are the most common YAML errors?
Inconsistent indentation, tabs instead of spaces, and a missing space after a colon.
Can YAML use tabs?
No. YAML indentation must use spaces.
Does it validate Kubernetes or Compose schemas?
It checks YAML syntax and structure, not the specific schema of each tool.