About this tool
Paste YAML, JSON or TOML and convert it to either of the other two. The input format is detected automatically, key order is preserved, and parse failures report the line and column rather than a bare "invalid input".
Converting passes through a data model, so comments and formatting are not carried across — the tool says so rather than dropping them silently. TOML cannot represent a top-level array or a bare scalar, and that is reported as a clear message instead of an error.