Runs locally
YAML Formatter
Parse YAML and print it in a stable form.
Ctrl+Enter runs. Ctrl+Shift+Backspace clears.
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Invalid YAML is reported by the parser. The tool does not execute any tags as code.
About this tool
Check a Kubernetes manifest, a docker-compose.yml or a CI workflow before you commit it. Paste the YAML to get consistent indentation, or a parser error that shows what is wrong.
How to use it
- 01
Paste the YAML.
- 02
Review the formatted output or the error.
- 03
Copy the clean YAML.
FAQ
Frequently asked questions
Is it safe to paste YAML with custom tags?
Yes. Tags are never executed as code; the document is only parsed and printed.
Are comments kept?
Reformatting goes through a parser, so comments may be dropped. Keep a copy if they matter.