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Validate and format YAML files online. Free browser utility for founders, marketers, and operators who need fast, no-login workflows.
Paste your YAML and instantly check for syntax errors, indentation issues, and common mistakes. Works entirely in your browser — nothing is sent to any server.
Use spaces, never tabs
key: value (2-space indent)Strings with special chars
name: "value: with colon"Lists use dash + space
- item1\n- item2Booleans are lowercase
enabled: true (not True/TRUE)Null values
value: null (or ~)Multi-line strings
text: |\n line 1\n line 2Share this tool
/// Next best path
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