JSON Formatter

Format, validate, minify and convert JSON data online. Supports tree view, JSON to XML/CSV/YAML. Works entirely in browser — no data is sent to any server.

📁 Upload JSON file or drag & drop here

Input JSON

Output

What is JSON Formatter?

JSON Formatter is a free online tool that helps you format, validate, minify and convert JSON data. Supports tree view navigation, JSON to XML/CSV/YAML conversion. All processing is done in your browser — your data never leaves your device.

Features

Format (Beautify) — Add indentation (2 or 4 spaces) to make JSON readable
Minify (Compress) — Remove all whitespace to reduce file size
Validate — Check JSON syntax with exact error location and line number
Tree View — Collapsible hierarchy display for navigating large JSON
Format Conversion — Convert JSON to XML, CSV, YAML
Copy & Download — One-click copy to clipboard or download as file
File Upload — Load JSON from local file

Common JSON Errors Detected

Missing commas between elements
Trailing commas before closing brackets
Single quotes instead of double quotes
Unquoted property names
Missing closing brackets

Tip: Click the "Sample" button to load example JSON and quickly test the formatter.