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JSON Formatter & Beautifier Online

Format, beautify and validate JSON data online. Free JSON formatter with pretty print, syntax highlighting and error detection.

Indent: Sort Keys:

📝 Input JSON

📤 Formatted Output

JSON Validator Online

Validate JSON syntax online. Free JSON lint tool — check if your JSON is valid and get detailed error messages with line/column information.

🔍 JSON to Validate

JSON Minifier & Compressor Online

Remove whitespace and compress JSON to minimum size. Free JSON minifier — reduce JSON file size for faster loading.

📝 Input JSON

📤 Minified Output

JSON Converter Online

Convert JSON to CSV, XML, YAML, TSV and plain text online for free. No signup required.

Convert to:

📝 Input JSON

📤 CSV Output

JSON Diff Tool Online

Compare two JSON documents and highlight the differences. Free JSON diff and compare tool online.

JSON A — Original

JSON B — Modified

JSON Tree Viewer Online

Visualize JSON as an interactive collapsible tree. Explore nested structures and objects easily.

📝 Input JSON

Tree will appear here...

JSON Escape & Unescape Online

Escape or unescape JSON strings. Convert special characters to JSON-safe escape sequences and vice versa.

Mode:

📝 Input

📤 Escaped Output

📣 ADVERTISEMENT — Replace with Google AdSense

How to Use JSON Formatter

📋

Paste or type your JSON into the input box

⚙️

Choose indent style and formatting options

✨

Click Format to beautify or Validate to check syntax

📥

Copy output or download the formatted JSON file

All Tools

✨

JSON Formatter

Beautify JSON with 2/4 spaces or tab. Sort keys, syntax highlighting.

✅

JSON Validator

Validate JSON online. Precise error location and detailed messages.

⚡

JSON Minifier

Compress JSON to minimum size. Remove whitespace and comments.

🔄

JSON Converter

Convert JSON to CSV, XML, YAML, TSV online for free.

⚖️

JSON Diff

Compare two JSON documents. Highlight added, removed, changed values.

🌳

JSON Tree Viewer

Interactive collapsible tree view. Explore JSON structure visually.

🔤

JSON Escape

Escape/unescape JSON strings. Convert special characters safely.

🔒

100% Private

All processing in browser. Your JSON never leaves your device.

📱

Mobile Friendly

Fully responsive. Works on phones, tablets, and desktops.

Frequently Asked Questions

What is a JSON formatter? ▼

A JSON formatter (also called JSON beautifier or JSON pretty printer) reformats compact or messy JSON with proper indentation and line breaks, making it easy to read and understand.

How do I validate JSON online? ▼

Click the Validator tab, paste your JSON and click Validate. The tool instantly checks JSON syntax and shows detailed error messages with exact location information if there are any issues.

What is JSON minification? ▼

JSON minification removes all whitespace, newlines, and unnecessary characters to produce the smallest possible valid JSON string. This reduces file size for faster network transfers.

How do I convert JSON to CSV? ▼

Use the Converter tab. Paste a JSON array of objects and select CSV as the target format. The tool generates CSV with column headers from your JSON keys.

Is my JSON data safe? ▼

Yes, 100% safe. All processing happens entirely in your browser using JavaScript. No data is ever sent to any server. Your JSON never leaves your device.

What is the difference between JSON format and JSON validate? ▼

JSON format (beautify) adds indentation and line breaks for readability. JSON validate checks whether the JSON syntax is correct according to the JSON specification. Our tool does both.

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