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JSON / YAML / TOML Converter

Convert between JSON, YAML, and TOML — validate, format, minify, and download in your browser

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Output
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All conversion runs in your browser. No data is sent to any server. TOML has limited support for some JSON types (e.g. undefined).

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JSON / YAML / TOML Converter

Convert data between JSON, YAML, and TOML instantly with this free online converter. Paste your config or data in any of the three formats and get clean, valid output in the others — perfect for editing config files, APIs, and CI pipelines.

FAQ

Which conversions are supported?
You can convert in any direction between JSON, YAML, and TOML, so you can move config between tools that expect different formats.
Is my data sent to a server?
No. The conversion runs in your browser, so sensitive configuration and secrets never leave your machine.
Why convert between these formats?
JSON is great for APIs, YAML is popular for Kubernetes and CI configs, and TOML is common in Rust and Python tooling. Converting lets you reuse the same data everywhere.