JSON Formatter & Validator

Format, beautify, minify, and validate JSON instantly. Convert to CSV, XML, and YAML. 100% client-side — your data never leaves your browser.

100% Client-SideNo UploadFree ForeverNo Sign-up
Indent:
Input
0 chars
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0 chars
Output will appear here...

How to Use the JSON Formatter

1. Paste or type your JSON into the input panel on the left. The tool auto-formats your JSON as soon as you paste it, so you get instant results with zero clicks. You can also click "Load sample" to try it out with example data.

2. Choose your action from the toolbar. Click Format to beautify with your preferred indentation (2 spaces, 4 spaces, or tabs). Click Minify to compress your JSON into a single line. Click Validate to check for syntax errors with precise line and column numbers.

3. Explore and export your formatted output. Switch to Tree View to navigate your JSON structure with collapsible nodes and click any node to copy its path. Use the conversion tabs to transform your JSON into CSV, XML, or YAML. Copy or download the result with one click.

All processing runs entirely in your browser using native JavaScript. Your data is never uploaded to any server, making this tool safe for sensitive or proprietary JSON data. There are no file size limits beyond your browser's memory.

Ad

Frequently Asked Questions

A JSON formatter is a tool that takes raw or minified JSON data and reformats it with proper indentation and line breaks, making it easy to read and debug. Our formatter also validates your JSON and highlights syntax errors with exact line numbers.
Yes, absolutely. All JSON processing happens 100% in your browser using JavaScript. Your data never leaves your device and is never sent to any server. There are no uploads, no tracking, and no storage of your data.
Yes. This tool supports converting JSON to CSV, XML, and YAML formats. Simply paste your JSON and use the conversion tabs below the main editor to see your data in different formats instantly.
Format (beautify) adds indentation and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace to make the JSON as compact as possible, which is ideal for APIs and data transfer where file size matters.
Click the Validate button and our tool will show you the exact error message with the line and column number where the problem is. Common issues include missing commas, unquoted keys, trailing commas, and single quotes instead of double quotes.

Related Tools

{}Base64 Encoder.*Regex Tester{ }CSS FormatterAaWord Counter