How to Format JSON Online

Minified or raw JSON is nearly impossible to read and debug. Formatting JSON — also called beautifying or pretty-printing — adds proper indentation and line breaks to make the structure immediately clear. This guide shows you exactly how to format JSON online in seconds using JSONHack's free JSON formatter.

Step 1: Get Your Raw or Minified JSON

Start with the JSON you want to format. This could be:

• A minified API response copied from your browser's network tab
• A JSON string from a database or log file
• A configuration file that's hard to read
• JSON you received from a colleague or third-party service

Example of minified JSON:

{"name":"Alice","age":28,"skills":["JavaScript","Python"],"address":{"city":"New York","zip":"10001"}}

Step 2: Open JSONHack JSON Formatter

Go to JSONHack.top. The JSON tab is selected by default. You'll see an input area on the left and an output area on the right.

Step 3: Paste Your JSON

Click inside the input area and paste your JSON. JSONHack accepts any valid JSON — objects, arrays, nested structures, or even a single value.

Step 4: Click "Format"

Click the Format button. JSONHack will instantly parse your JSON and output a clean, properly indented version in the output area.

Formatted result:

{
  "name": "Alice",
  "age": 28,
  "skills": [
    "JavaScript",
    "Python"
  ],
  "address": {
    "city": "New York",
    "zip": "10001"
  }
}

Step 5: Copy or Download the Result

Use the Copy Output button to copy the formatted JSON to your clipboard, or click Download .txt to save it as a file.

Other Things You Can Do

Why Format JSON?

• Easier debugging — spot missing commas, brackets, or wrong values at a glance
• Better code reviews — share readable JSON with your team
• Faster development — understand API responses without squinting at a single line
• Error prevention — formatting reveals structural issues before they cause bugs

Tips for Working With JSON

• Always validate JSON before using it in production code
• Use double quotes for all keys and string values
• Avoid trailing commas — they're valid in JavaScript but not in JSON
• Use JSONHack's formatter when reviewing API responses during development
• Minify JSON only for production — keep formatted versions for development

Related Guides

• What is JSON? — Complete Beginner Guide
• Common JSON Errors and How to Fix Them
• JSON Formatting vs Minifying — What's the Difference?
• JSON Formatter Guide