YAML to JSON Converter Online

Converts YAML to JSON directly in your browser — no data sent to the server. Supports a subset of YAML 1.2 that covers the vast majority of real-world config files.

Supported constructs

• Mappings (key: value) with arbitrary nesting;
• Sequences (items prefixed with -);
• Single- and double-quoted strings;
• Numbers, booleans (true/false/yes/no), null;
• Block scalars (| literal, > folded);
• Inline arrays [a, b] and objects {k: v}.

Limitations

Not supported: anchors and aliases (&anchor, *alias), tags (!!str), multi-document files, inline comments after values.