Online JSON Prettify

I am excited to introduce our JSON Prettify tool. As a developer I often face long JSON strings that look like one line of chaos. I built this simple in-browser solution to turn that chaos into clarity. Whether you are a beginner or a seasoned professional you are one click away from well structured JSON.

What is a JSON Prettify?

JSON Prettify is a utility that transforms raw or compact JSON data into a human readable format. It inserts line breaks and indentation to reveal the nested structure of objects and arrays. A typical JSON response from an API may be hard to parse when it is all on one line. This tool makes it easier to inspect, edit and share JSON with others.

What Does Our JSON Prettify Do?

When you paste your JSON into the input field and click the prettify button the tool will parse the text as JSON. If the structure is valid the result will appear in the output box with two space indentation. If the JSON is invalid you will receive a clear error message. The entire process is handled in your browser so your data never leaves your machine.

What to Expect When Using This Tool

On load you will see two text areas side by side. The left area is for input and the right area will display the formatted result. Labels guide you to paste your JSON and click the prettify button. You can clear both fields at any time. The layout adjusts on mobile devices by stacking the fields vertically for easy use on a phone or tablet.

Common Use Cases

This tool is useful in many scenarios. You can use it to:

• Debug responses from REST or GraphQL APIs
• Format configuration files for clarity
• Clean up sample data before sharing it in documentation
• Validate that you have balanced braces and brackets
• Improve readability during code review

Input and Output Examples

Example 1

Input:

{"name":"Alice","age":30,"skills":["JavaScript","Python","Go"],"contact":{"email":"[email protected]","phone":"123-456-7890"}}

Output:

{
  "name": "Alice",
  "age": 30,
  "skills": [
    "JavaScript",
    "Python",
    "Go"
  ],
  "contact": {
    "email": "[email protected]",
    "phone": "123-456-7890"
  }
}

Example 2

Input:

[{"id":1,"title":"First"},{"id":2,"title":"Second"},{"id":3,"title":"Third"}]

Output:

[
  {
    "id": 1,
    "title": "First"
  },
  {
    "id": 2,
    "title": "Second"
  },
  {
    "id": 3,
    "title": "Third"
  }
]

Frequently Asked Questions (FAQs)

What happens if I paste invalid JSON?

You will receive an alert that explains the parsing problem. The input remains unchanged so you can fix it.

Can I use this on my phone?

Yes the layout adapts to mobile screens and you can prettify JSON on the go.

Do I need to install anything?

No installation is required. This is a pure in-browser tool.

Is my data sent to a server?

No data leaves your device. All formatting happens locally.

Can I change the indentation size?

Currently the tool uses two spaces. You cannot change this setting.

Can I copy the output to my clipboard?

Yes you can select the output and use your device copy command.

Does this support large JSON files?

It can handle moderately large data but performance may vary by browser.

What if I want minified JSON?

Use our JSON Minify tool.

Is this open source?

The code runs in your browser and you can inspect it in the page source.

Benefits of Using Formatted Data

• Formatted JSON is easier to scan and debug.
• It helps you spot missing commas or mismatched brackets.
• A clear structure makes code reviews faster and reduces errors when copying and pasting data.
• Well formatted JSON is friendlier for version control diffs and documentation.

Best Practices

• Always validate JSON before sharing it.
• Keep your data consistent by choosing a fixed indent size.
• Do not rely on manual spacing in your code editor.
• Use this tool to standardise format across your team.
• When working with large files consider splitting them into smaller chunks.

Integration with Editors and Workflows

• You can paste JSON directly from editors like VS Code or Sublime Text.
• Use this tool to preview API responses before you commit changes.
• It fits into any development workflow and helps you maintain consistent formatting across your project.

Getting Started

1. Open the JSON Prettify page.
2. Paste or type your raw JSON into the left textarea.
3. Click the Prettify JSON button.
4. Review the output in the right textarea.
5. Copy the formatted JSON for use in your project.
6. Click Clear All to reset both fields.