HTMLJSON to CSV Converter
Convert a JSON array of objects to a CSV file. Auto-detects headers from keys, handles nested values, and lets you download the result. Runs entirely in your browser — no data leaves your machine.
Ctrl+Enter to run | Ctrl+K to switch tools | Recent button shows input history
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What JSON structure does this expect?
An array of objects: [{\"a\":1,\"b\":2},{\"a\":3,\"b\":4}]. Each object becomes a row; keys from the first object become column headers.
How are nested objects handled?
Nested objects are serialized to a JSON string in the cell. For deeply nested data, consider flattening before converting.