Paste your YAML
Real parsing in your browser with the js-yaml engine. Nothing leaves your device.
Powered by js-yaml 4.1.0 (full YAML 1.2 core parsing). Multi-document files are not supported; validate one document at a time.
Frequently asked questions
How do I find what is wrong with my YAML?
Paste it and click Validate YAML. If it is invalid, the tool shows the exact line and column plus the offending lines highlighted, so you can fix the indentation or syntax error right away.
Does my YAML get uploaded anywhere?
No. The js-yaml parsing engine runs entirely in your browser. Your YAML never leaves your device, which makes this safe for configs with secrets.
Is this tool really free?
Yes. Everything runs in your browser, no signup and no limits. Your data never leaves your device.
Preview
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