YAML Re-indenter
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.
How to Use the YAML Re-indenter
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Frequently Asked Questions
What YAML issues does it fix?
Fixes inconsistent indentation, misaligned colons, inconsistent list markers, trailing spaces, and incorrect spacing after colons. Normalizes the entire document.
Does it validate YAML syntax?
Yes. The tool detects and reports syntax errors like invalid indentation, unclosed quotes, and malformed mappings. Errors are highlighted with line numbers.
Can I choose indent size?
Yes. Choose between 2-space (default) or 4-space indentation. The tool re-indents the entire document with consistent spacing.
Does it handle multi-line strings?
Yes. Block scalars (| and >) and flow scalars are preserved. The tool re-indents around them without breaking the string content.
Is my YAML uploaded?
No. All re-indentation happens locally in your browser. No YAML data is sent to any server.
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Last updated October 2026