Clean up messy YAML — fix indentation, align colons, and normalize list formatting. Paste any YAML and get consistently formatted output. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Validate YAML formatting, detect indentation issues, convert YAML to JSON, and minify YAML comments. Code never leaves your device — formatting and validation run locally in your browser.
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Fixes inconsistent indentation, misaligned colons, inconsistent list markers, trailing spaces, and incorrect spacing after colons. Normalizes the entire document.
Yes. The tool detects and reports syntax errors like invalid indentation, unclosed quotes, and malformed mappings. Errors are highlighted with line numbers.
Yes. Choose between 2-space (default) or 4-space indentation. The tool re-indents the entire document with consistent spacing.
Yes. Block scalars (| and >) and flow scalars are preserved. The tool re-indents around them without breaking the string content.
No. All re-indentation happens locally in your browser. No YAML data is sent to any server.
YAML Validator
Validate YAML formatting, detect indentation issues, convert YAML to JSON, and minify YAML comments. Code never leaves your device — formatting and validation run locally in your browser.
YAML Formatter
Structures YAML configuration files with consistent indentation, proper key alignment, and readable hierarchy for Docker and CI/CD configs.