JSON FormatTool

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is based on JavaScript syntax but is language-independent, and is widely used in Web APIs, configuration files, NoSQL databases, and other scenarios. JSON supports six data types: objects {}, arrays [], strings "", numbers, booleans true/false, and null.

JSON formatting (beautifying) converts minified single-line JSON into a readable format with indentation and line breaks, making it convenient for developers to read and debug API return values and configuration files. This tool supports one-click beautify, minify, validate, and escape, and automatically counts depth, number of keys, and file size.

Common JSON syntax errors include: 1) Extra comma after the last item; 2) Using single quotes instead of double quotes for strings; 3) Missing double quotes around key names; 4) Unescaped special characters inside strings (such as newlines, quotes); 5) Mismatched brackets. This tool will precisely mark the line number of the error, allowing you to troubleshoot item by item according to the prompts.

Escape converts special characters in strings (such as double quotes ", backslashes \, newline characters) into escape sequences with backslashes (such as \", \\, \n) for safe embedding in JSON strings. Unescape is the reverse process, converting escape sequences back to original characters. It is often used when concatenating JSON or handling nested strings.