JSON Formatter
Beautify and pretty-print JSON data instantly — free, fast, no signup.
What is a JSON Formatter?
A JSON Formatter (also called a JSON Beautifier or JSON Pretty Printer) is a developer tool that takes raw, compact, or poorly structured JSON data and reformats it with proper indentation, line breaks, and consistent spacing — making it dramatically easier to read, debug, and understand.
JSON (JavaScript Object Notation) is the most widely used data interchange format on the internet. It powers REST APIs, configuration files, databases like MongoDB, and virtually every modern web application. However, JSON data returned from APIs or stored in databases is often minified (compressed into a single line) to save bandwidth, making it nearly impossible to read with the naked eye.
Our free JSON Formatter tool solves this problem instantly. Simply paste your raw JSON into the input field, click "Format JSON", and the tool will output beautifully structured, human-readable JSON with proper indentation. You can choose between 2-space, 4-space, or tab indentation to match your coding style.
The formatter also validates your JSON as it formats — if your input contains syntax errors like missing commas, unclosed brackets, or invalid escape sequences, the tool will highlight the error and tell you exactly where the problem is, saving you valuable debugging time.
Whether you're inspecting an API response, editing a configuration file, or reviewing a data export, the CodeKent JSON Formatter is the fastest way to make your JSON readable. It runs entirely in your browser — your data never leaves your computer, ensuring complete privacy.