YAML Formatter

The YAML Formatter helps you clean up and validate YAML configuration files. It detects structural issues such as tabs used for indentation (which YAML does not allow), normalizes key-value spacing, and removes excessive blank lines to produce clean, consistent output. The tool handles YAML mappings, sequences, comments, and nested structures. Errors are surfaced inline with the line number so you can fix problems quickly without hunting through the raw text. Whether you're working with Docker Compose files, Kubernetes manifests, GitHub Actions workflows, or application config files, this tool makes it easy to produce clean YAML that passes validation. Copy the result to clipboard with a single click.