YAML to JSON Documentation

Convert YAML into JSON with validation and instant browser-side output for API and config workflows.

A browser-loaded YAML 1.2 parser validates a single mapping or sequence, including nested lists and multiline strings. Comments are omitted from JSON. Duplicate keys, unsupported tags, non-string keys, cyclic aliases, unsafe integers, and non-finite numbers produce explicit errors instead of silent data loss.

• Inspect YAML configuration as JSON without discarding nested sequences.
• Convert a multiline YAML setting to its exact JSON string value.

Input

Text, files, or values entered in the browser, depending on the tool.

Output

A result shown in the browser that can be reviewed or copied where supported.

• Only data representable in JSON is accepted; comments and YAML formatting are not retained.
• Input is limited to 500,000 characters, 100 nested data levels, and bounded alias expansion.

Inputs for this browser-side tool are processed locally and are not sent to SiteIndex. Normal page analytics may still be collected as described in the Privacy Policy. Read the Privacy Policy.