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Data Format Converter

Six formats, thirty conversions, one page. Paste CSV, JSON, XML, YAML, TOML or a PHP array — the source format is detected for you — then pick what you want out of it. The formats are not equivalent, and this converter says so out loud: when nesting has to be flattened into CSV columns, when TOML refuses an array at its root, when XML has to invent a root element, you get told exactly what changed instead of quietly receiving mangled data. Numbers that would not survive the trip, like a leading-zero product code, stay as text. Everything runs in your browser — nothing you paste is uploaded.

This tool does not use any data storage or network traffic.

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Nothing leaves your browser


Every conversion runs locally, on this page. Config files, exports and whatever else you paste stay in the browser — nothing is uploaded, nothing is stored, and reloading the page clears it all.