Format, beautify, or minify your JSON data with validation
JSON (JavaScript Object Notation) is the most widely used data interchange format on the web. APIs, configuration files, and databases all rely on properly structured JSON. However, raw JSON responses from servers are often minified into a single line, making them nearly impossible to read. Our free JSON formatter instantly beautifies compressed JSON into a clean, indented structure so you can inspect keys, values, and nested objects at a glance.
Beyond formatting, this tool validates your JSON in real time. If a bracket is missing, a comma is misplaced, or a string is not properly quoted, the validator pinpoints the error with the approximate line number. You can choose between 2-space, 4-space, or tab indentation to match your team's coding style. The minify option does the reverse, stripping all whitespace to produce the smallest possible payload for network transmission or storage.
Developers, QA engineers, and data analysts use JSON formatters daily when debugging API responses, reviewing webhook payloads, or editing configuration files. Because the tool runs entirely in your browser, your data never leaves your machine -- making it safe for sensitive information such as tokens or personal data. Paste your JSON, click format, and copy the result in seconds.