📄YAML ⇄ JSONLIVE

YAMLJSON

YAML input

JSON output

Output appears here

Verify this YAML

Diagnostics run on whatever is in the input pane above.

Duplicate keys, tab indentation and unquoted values like NO or ON are silent in most parsers — the document loads, with the wrong data. This pass reports them with line numbers, and flags YAML constructs that do not survive a JSON round trip.

Load an example

Paste YAML above to run the diagnostics pass.

💡 Supports nested mappings, sequences, inline flow [a, b] / {a: 1}, and comments. Multi-document YAML, anchors (&/*), and block scalars (| / >) are not supported — for those, use a full YAML library in your build pipeline.