This tool is a fully-featured online JSON converter that helps developers quickly handle JSON data formatting, compression, escaping, unescaping, and syntax validation. All operations are performed locally in your browser; your data is never collected or uploaded.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format. It is based on a subset of ECMAScript and uses a text format completely independent of programming languages to store and represent data. Its concise and clear hierarchical structure makes JSON an ideal data interchange language.

Main Features

• Format/Beautify: Convert compact JSON strings into an easy-to-read format with indentation and line breaks.
• Compress: Remove whitespace from JSON strings with indentation and line breaks, compressing them into a compact single-line format.
• Escape: Convert special characters in JSON strings (such as double quotes, line breaks, etc.) into escape characters.
• Unescape: Restore escaped strings back to normal JSON format.
• Validate JSON: Check whether the input JSON string format conforms to the specification.

Tool Features

• Single-column editing with line numbers: Input and output in one column with automatic line numbers, providing a code editor-like experience.
• Smart unescaping: Automatically identifies and restores escape characters, avoiding abnormal displays such as [object Object].
• One-click operations: Formatting, compression, escaping, and validation completed with one click, with results replaced in place.
• Safe and reliable: Pure front-end execution, no data uploaded, absolutely protects your data privacy.