What is a JSON formatter?

A JSON formatter is a tool that takes raw JSON data and formats it with proper indentation and line breaks, making it easier to read and understand. Our JSON formatter automatically adds 2-space indentation, organizes nested objects and arrays, and highlights syntax for better visibility.

How do I format JSON online?

To format JSON online: 1) Paste your JSON into the editor, 2) Click the "Format" button, 3) Your JSON will be instantly formatted with proper indentation. You can also use Ctrl+V to paste and the formatter will automatically beautify valid JSON.

Is this JSON formatter free to use?

Yes, jsonformatter.me is completely free to use with no limitations. There are no signup requirements, no ads, and no data limits. You can format, validate, and view as much JSON as you need.

Is my JSON data secure?

Yes, your JSON data is 100% secure. All processing happens directly in your browser - no data is ever sent to our servers. Your JSON never leaves your computer, making it safe for sensitive data.

What is the difference between JSON formatter and JSON viewer?

A JSON formatter beautifies JSON text with proper indentation, while a JSON viewer provides an interactive way to explore JSON data through tree views, graphs, or other visualizations. Our tool includes both - you can format JSON in the editor and explore it in the Tree View tab.

Can this tool fix invalid JSON?

Yes! Our JSON formatter includes an intelligent auto-fix feature that can correct common JSON errors like trailing commas, single quotes instead of double quotes, unquoted keys, and missing commas. It will show you what was fixed automatically.

JSON Editor

Edit JSON with a powerful code editor

Open JSON Editor

Free, no signup required. Your data stays in your browser.

About This Tool

Our JSON editor provides a VS Code-like editing experience with syntax highlighting, bracket matching, and real-time validation. Perfect for creating, editing, and debugging JSON data.

Features

Monaco Editor

Same powerful editor used in VS Code with full JSON support

Syntax Highlighting

Color-coded JSON elements for easy editing

Auto-Completion

Smart suggestions as you type JSON structures

Bracket Matching

Easily find matching brackets and braces

Real-Time Validation

Errors are highlighted as you type

Find & Replace

Search and replace text within your JSON

How to Use

Start Editing

Type or paste JSON directly into the editor

Use Editor Features

Take advantage of syntax highlighting and auto-completion

Validate & Export

Format your JSON and copy it when ready

Common Use Cases

Creating JSON configuration files
Editing API request payloads
Modifying JSON data structures
Writing JSON by hand with assistance
Quick JSON prototyping

Frequently Asked Questions

What editor powers this tool?

We use the Monaco Editor, the same editor that powers Visual Studio Code. It provides professional-grade editing features including syntax highlighting, auto-completion, and error detection.

Does it support keyboard shortcuts?

Yes! Standard editor shortcuts work: Ctrl+Z (undo), Ctrl+Y (redo), Ctrl+F (find), Ctrl+H (replace), and many more. The editor supports all Monaco/VS Code keyboard shortcuts.

Can I edit large JSON files?

Yes, the Monaco editor is optimized for large files. It uses virtualization to only render visible content, making it efficient even for JSON documents with thousands of lines.

Is there auto-completion for JSON?

Yes, as you type, the editor suggests JSON structures like brackets, quotes, and common patterns. It also helps close brackets and quotes automatically.

Try All Our JSON Tools

Format, view, validate, compare, and analyze JSON - all in one place.

Go to JSON Formatter