Data formatters
JSON to CSV Converter
Convert JSON arrays or objects into CSV locally in your browser.
Runs locally in your browser
Drop a JSON fileConverts objects or arrays of objects to CSV locally.
How to use this tool
Paste or type your input into the tool panel. Results update immediately where possible. For privacy-first tools, your input is processed locally in the browser and is not stored for analytics.
FAQ
Is this tool free?
Yes. Lumio Utils starts with free browser-based tools and does not require registration.
Do you store my input?
No tool inputs, file contents, passwords, or private generated outputs are stored for analytics.