Skip to contentBeautify, minify and validate JSON instantly. Copy or download the result.
Beautify, minify and validate JSON instantly. Copy or download the result.
Developer utilities should be fast, copy-friendly, and predictable. Paste input, get formatted or converted output, and move on — no CLI install required.
Use this free JSON Formatter & Validator whenever you need a reliable result without creating an account or installing software. It loads in one click and works on desktop and mobile browsers.
Tentaco runs this tool in your browser whenever possible. Text and structured input you paste are handled in the page session unless the tool explicitly fetches remote data. Close the tab or clear the page after use on shared computers. Features that call external APIs (such as URL fetchers) only send the data required for that request.
Yes — invalid JSON is highlighted with line and column hints so you can fix syntax errors before copying the output.
Switch between compact minified output and indented pretty-print. Choose tab or space indentation and control key sorting.
No — processing runs locally in your browser. Your files and inputs do not leave your device unless the tool explicitly uses the network.
