Free YAML Formatter / Validator Online
Use this free YAML formatter to clean up and validate YAML. Fast, private, and works directly in your browser.
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What is YAML Formatter?
YAML Formatter parses and re-emits YAML with consistent indentation, which also validates that the YAML is well-formed. It is useful for config files in CI, Kubernetes, and apps. Formatting runs in your browser.
How to use this tool
- Paste your YAML into the input box.
- Click Format YAML.
- Copy the formatted output.
Features
- Reformat YAML with consistent indentation
- Validates as it formats
- Clear error messages
- Copy the formatted YAML
- Runs entirely in your browser
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
Does it validate my YAML?+
Yes. If the YAML is invalid, you will see an error instead of output.
Does it change values?+
No. It normalizes formatting; the data stays the same.
Is my YAML uploaded?+
No. Formatting happens entirely in your browser.
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