Data formatters
JSON Minifier
Minify JSON locally in your browser and validate that the input is valid JSON.
Runs locally in your browser
Drop a JSON fileLoads .json or text files locally into the editor.
{"hello":"world"}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.