Paste any YAML and get back clean, consistently indented output. Supports 2-space and 4-space indentation. Handles multi-document YAML separated by ---.
Instantly catch indentation errors, duplicate keys, invalid anchors, and type mismatches. The validator parses your YAML fully and shows a precise error message on failure.
Booleans, nulls, integers, and floats are preserved correctly. Strings that could be misread as other types are automatically quoted to prevent silent data corruption.
All formatting runs entirely in your browser — no data is ever sent to a server. Safe for Kubernetes configs, CI/CD pipelines, and sensitive credentials.
A YAML formatter parses raw YAML text and re-serialises it with consistent indentation and spacing, producing output that is both human-readable and spec-compliant. It also validates whether the input is syntactically correct YAML.
YAML uses indentation to define structure — unlike JSON which uses braces and brackets. Inconsistent indentation causes parse errors or silently changes the data hierarchy, making a formatter essential for any YAML-heavy workflow.
Yes. Kubernetes manifests, Docker Compose files, GitHub Actions workflows, and most CI/CD config files are standard YAML and are fully supported, including multi-document files using the --- separator.
Yes. This tool runs entirely in your browser. No data is sent to any server, so it is safe to paste YAML containing passwords, API keys, or private configuration values.