Format, validate, and inspect JSON safely
JSON is a structured text format used by APIs, configuration files, and application logs. A formatter adds indentation and line breaks so nested objects and arrays are easier to read, while a minifier removes unnecessary whitespace for compact storage or transmission. Paste the JSON, choose Format or Minify, and use the validation message to locate syntax problems before copying the result.
Valid JSON requires double-quoted property names and strings, no trailing commas, and correctly matched braces and brackets. JavaScript object literals may look similar but can include features JSON does not allow, such as comments, single quotes, and undefined values. Formatting changes whitespace only; it does not verify that field names, IDs, dates, or API values are semantically correct. Remove secrets, access tokens, personal data, and production credentials before pasting diagnostic payloads into any browser tool.