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YAML ⇄ JSON ⇄ TOML Converter

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Convert config files between YAML, JSON, and TOML using real parsers, with format auto-detection and precise syntax error positions

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YAML ⇄ JSON ⇄ TOML Converter

Convert between YAML, JSON, and TOML with real parsers, precise error positions, and no data sent anywhere.

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YAML input

1 lines · 0 chars · Tab indents, Esc then Tab exits

JSON output

Conversion notes

JSON

The strictest of the three: no comments, no trailing commas, and keys must be quoted strings. Comments in YAML or TOML input are dropped when converting to JSON.

YAML

Supports anchors, aliases, and multiple documents in one file. Multi-document input is converted into an array, one entry per document.

TOML

Requires a table at the top level, so a bare array or scalar cannot be converted. TOML has no null type — null values are reported and omitted rather than silently lost.