YAML Formatter
Paste YAML to format and validate it, or convert between YAML and JSON. All processing happens in your browser.
Frequently Asked Questions
How do I format and validate YAML?
Paste your YAML and the tool checks it for errors and re-indents it cleanly. Because YAML relies on indentation, this quickly reveals structural mistakes that are easy to miss by eye.
Can I convert between YAML and JSON?
Yes. The tool converts YAML to JSON and JSON to YAML, which is handy when moving configuration between tools that prefer one format over the other.
Why does YAML break so easily?
YAML uses indentation to define structure, so mixing tabs and spaces or using inconsistent indentation causes errors. Always indent with spaces and keep the levels consistent.
Is my YAML kept private?
Yes. All formatting, validation and conversion happens in your browser, so your config files never leave your device.