Data formatters

JSON Formatter and Validator

Format, validate, and minify JSON locally with clear error messages.

Runs locally in your browser

{
  "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.

Can hashes be decoded?

Cryptographic hashes such as MD5 and SHA-256 are one-way. This site generates and compares hashes; it does not claim to reverse them.