CloudlessToolsHow to use the JSON formatter
Paste or drop a .json file into the left box. Click Format to pretty-print it with your chosen indentation, or Minify to strip all whitespace for smaller payloads. Enable Sort keys to order object keys alphabetically, which makes diffs easier to read.
Finding JSON errors
The validator runs as you type. If the JSON is invalid, it shows the line and column of the problem. Common causes are trailing commas, single quotes instead of double quotes, unquoted keys, and comments, none of which are allowed in standard JSON.
Is my data safe?
Yes. All processing happens locally in your browser using JavaScript. Nothing is sent to a server, so it's safe to use with API responses, config files and other sensitive data.