Paste your JSON to format, validate, and beautify it instantly. Minify for production or prettify for reading.
Paste raw or minified JSON into the input panel. ToolBolt validates it instantly and displays formatted, syntax-highlighted output. Choose 2-space, 4-space, or tab indentation. Minify for production or download the formatted file.
JSON (JavaScript Object Notation) is a lightweight data format for storing and exchanging data. It's the standard for APIs, config files, and data storage across virtually every programming language.
The formatter uses your browser's native JSON parser. If the JSON is invalid, you'll see a red indicator with the specific error message and approximate location of the problem.
Yes. All formatting happens entirely in your browser. No data is sent to any server. Your JSON never leaves your device.
Formatting adds indentation and line breaks for readability. Minifying removes all whitespace to create the smallest possible output — ideal for APIs and production code.