Free YAML Formatter
Format and validate YAML.
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About the YAML Formatter
Free YAML formatter and validator. Clean up and normalize YAML, catch syntax errors, and convert consistently — processed entirely in your browser.
How it works
- 1
Paste YAML
Add your YAML.
- 2
Format
Get normalized, valid YAML.
- 3
Copy
Copy the result.
Frequently asked questions
Yes — invalid YAML is reported with an error so you can fix it.
No — it re-serializes the same data with consistent formatting.