YAML Validator

Runs in your browser — nothing is uploaded
Paste YAML
Paste YAML on the left and click Validate.
JSON equivalent 

    

  







About this tool
Validates a common YAML subset — block/flow mappings and sequences, quoted/unquoted scalars, comments. Not supported: anchors/aliases (&/*), multi-document files, block scalars (|/>), and custom tags. If your YAML uses those, treat a failure here as inconclusive rather than "wrong."


Frequently asked questions
What is YAML Validator?
Validate and format YAML documents. It is one of the JSON, XML & YAML tools on MyCodeTips.
How do I use YAML Validator?
Open the tool, enter or paste your input, and the result appears right away. Use the Copy button to copy it.
Is YAML Validator free to use?
Yes. It is free to use and does not need an account.
Is my data safe with YAML Validator?
Yes. It runs entirely in your browser, so what you enter is never uploaded to our servers.
Can I share my result?
Yes. Use the share buttons below the tool to post a link or copy a link to the tool page.

  

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