Utility workspace

YAML Formatter - My Tools

Format YAML configuration files online and check syntax errors and duplicate keys.

YAML Formatter

How to use

  • Paste the YAML string to format or validate into the input field.
  • Indentation: Choose the desired number of spaces.
  • Format: Click it to format the input as readable YAML.
  • YAML syntax errors appear below the input field.

Note: Comments may not be preserved during formatting.

YAML

YAML is a human-readable configuration file format that represents data hierarchies through indentation.

It is widely used in deployment and automation environments such as Docker Compose, GitHub Actions, Kubernetes, CI/CD pipelines, and application config files.

The YAML formatter helps you quickly inspect configuration-file indentation and structure and validate it in a form that makes syntax errors easier to fix.