Why is YAML validation important?

YAML uses indentation for structure. One wrong space can break a deployment.

Does the tool send my configs to a server?

No. Validation runs in your browser.

Does it convert tabs to spaces?

Yes. The formatter standardizes indentation with spaces; tabs are invalid in YAML.

YAML Formatter / Validator

YAML is strict about indentation, so manual debugging is error-prone. The YAML Formatter and Validator checks syntax and structure. Whether you use Kubernetes, Docker Compose, or GitHub Actions, this local tool keeps your configs private and correct.

Free · No limits · Runs in your browser

How to use

1Paste your YAML configuration into the tool.
2See immediately if syntax is valid or where indentation is wrong.
3Copy the corrected, formatted YAML.

Frequently asked questions

Why is YAML validation important?: YAML uses indentation for structure. One wrong space can break a deployment.
Does the tool send my configs to a server?: No. Validation runs in your browser.
Does it convert tabs to spaces?: Yes. The formatter standardizes indentation with spaces; tabs are invalid in YAML.