JSON Formatter

Tool Guide

About the Online JSON Formatter

This tool quickly formats messy, minified, or malformed JSON text into clean, indented, standard JSON, and also lets you browse the data as a collapsible tree — handy for debugging and reading complex JSON.

Key Features

1. Multiple Indent Styles

Supports 2-space, 4-space, tab indentation, and a no-linebreak minified output, covering different formatting needs.

2. Tree View Visualization

Displays JSON as expandable/collapsible tree nodes, with objects, arrays, strings, numbers, and booleans color-coded for quick scanning.

3. Syntax Error Detection

Automatically detects JSON syntax errors and flags them, so a formatting slip doesn't silently fail to parse.

How to Use

Step 1: Paste your JSON text into the input box.

Step 2: Choose an indent style (2-space / 4-space / tab / minified).

Step 3: View the formatted result, or switch to tree view to expand it level by level.

Use Cases

Great for API debugging, log inspection, config-file cleanup, and front-end/back-end integration testing where you need to quickly view or beautify JSON.

FAQ

Can it minify JSON too?

Yes — choose the "minified" output to compress the JSON onto a single line for transport or storage.

What's the difference between tree view and text view?

Text view shows the full formatted text; tree view shows it as expandable/collapsible nodes, which is better for jumping straight to a deeply nested field.