Does this validate YAML schemas?
No. It validates YAML syntax only.
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YAML Validator
Validate YAML syntax and structure.
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Validate YAML syntax and structure.
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Tool guide
YAML Validator Online
Validate YAML syntax in a lightweight browser-first tool. It is useful for checking configuration files, front matter, and structured YAML snippets.
Steps
How it works
- Paste YAML text.
- Click Validate YAML.
- Review the success or error message.
- Fix any syntax issues and validate again.
Highlights
Key features
- Uses the same YAML parser as the formatter.
- Shows clear syntax errors where possible.
- Does not send YAML to a server.
- Works with pasted text and text files.
Use cases
Common uses
- Check app configuration YAML.
- Validate documentation front matter.
- Debug indentation-sensitive YAML.
Notes
Limitations to know
- Schema-specific validation is not included.
- Parser error messages may vary by YAML feature.
- The tool checks syntax, not application-specific rules.
FAQ
3 answersFrequently asked questions
Why is indentation important?
YAML uses indentation for structure, so inconsistent spacing can change or break the document.
Can I format valid YAML too?
Yes. Use YAML Formatter to normalize readable output.