JSON Formatter

Input

Empty

Output

Formatted JSON will appear here
Our free JSON Formatter can instantly format, validate, minify and beautify your JSON code. Clean, readable and easy to understand your JSON by pasting or importing. Built-in validation for syntax errors, select the indentation style, and view structured JSON in code or tree view. Unlike most other JSON formatters, our JSON Formatter Online is run directly in your browser, meaning that no JSON is uploaded to a server and stays on your device.

How it works

Quickly and easily format, validate and/or minify JSON. There is no need to make an account, install anything or upload to a server.
Step 1

Paste or import a JSON file

Copy and paste your JSON to the input editor or load a file from your device with a .json extension. The included sample JSON can be loaded to test the tool.

Step 2

Format, Minify, or Validate

Use Format to pretty up your JSON, Minify to strip out any unnecessary whitespace, or Validate to catch any syntax errors in your JSON. Choose the desired indentations (2 spaces, 4 spaces, or tabs).

Step 3

Copy or Download

Take a look at what you created in the output pane. Copy to your Clipboard or download as a JSON file.

What makes our JSON Formatting Tool special?

The JSON Formatting Tool includes formatting, validation, minification and visualization in a single, easy-to-use browser-based tool.

Format JSON Instantly

Convert compressed or hard to read JSON to clean, properly indented and readable code.

Validate JSON Syntax

Look for syntax errors in JSON and know exactly where and on which line a problem lies.

Minify JSON

Trim away any unnecessary spaces and line breaks to get a compact JSON that can be used for data transfer and storage.

Choose Your Indentation

Write JSON with 2, 4, or 2 tab indents.

Learn about JSON as a Tree

Use the Tree view to browse a hierarchy of objects and arrays in an expandable structure.

Exports and imports JSON

Import JSON files directly to the tool and copy or download the result (formatted or minified).

JSON Formatter Popular Use Cases

API Development

Return API responses in the form of JSON that is easier to inspect, understand and debug during development.

Debugging JSON

Detect syntax errors, like missing brackets, comma errors, or incorrect values, with JSON validation.

Web Development

Configure JSON (including format configurations, API data, JavaScript objects, and others) in web applications.

Data Analysis

Use formatted code or tree view for large or nested JSON structures to make them more easy to inspect and comprehend.

Configuration Files

Make JSON configuration files more readable and maintainable.

API Response Testing

Simply copy and paste the API responses into the Formatter to instantly check the structure of those responses and detect invalid JSON.

Learning JSON

Learn to use a formatter to decipher JSON objects, arrays, nesting, indentation, and syntax.

Sharing JSON

Before sharing the JSON data with developers, teams, clients or technical support, clean and format it.

What you can do with our JSON formatter?

JSON (JavaScript Object Notation) is a lightweight data exchange format, which is used to transmit structured data between applications. While JSON is machine-readable, compact JSON can be challenging for humans.

A JSON Formatter formats JSON object, array, keys, and values into a readable structure by adding indentation and line breaks.

For instance, a mini JSON like:

{"name":"John","active":true,"skills":["HTML","CSS","JavaScript"]}

Can be structured to be more readable:

{

"name": "John",

"active": true,

"skills": [

"HTML",

"CSS",

"JavaScript"

]

}

Key Benefits
  • Format & beautify JSON
  • Minify JSON
  • Validate JSON syntax
  • Click 2-space, 4-space or tab indentation
  • Import .json files
  • Load sample JSON
  • View formatted JSON as code
  • Explore JSON using Tree view
  • Copy formatted output
  • Download JSON results
  • Clear input and output
  • Immediate JSON processing in the browser.
  • How to get JSON formatted.
  • Clean and readable JSON
  • Built-in syntax validation
  • JSON beautification
  • JSON minification
  • Custom indentation
  • Code and Tree views
  • Support for importing and downloading.Import/Download support.
  • Browser-based processing
  • No signup required

Format JSON vs Minify JSON

Feature Format JSON Minify JSON
Readability Excellent Low
Indentation Added Removed
Line Breaks Added Removed
File Size Larger Smaller
Best For Development & debugging Data transmission
Human-Friendly Yes No

JSON Code View vs Tree View

We offer 2 means to explore your JSON data with our tool.

Code View

The Code view is a view for developers to read or copy the actual structure of the JSON code, which is formatted with indentation and line breaks.

Tree View

JSON is displayed in the Tree view as an expandable structure. Explore nested objects and arrays without searching through a big paragraph of text.

Read, inspect, edit or debug your data in JSON format. Create a minified version of JSON – for when you need a very compact version without space at the end of the line or the beginning of the document. In cases of deeply nested JSON data, tree view can be helpful.

Common JSON Formatting Problems & Fixes

Invalid JSON Syntax

JSON is a strict syntax language. Typically, you will have a problem with commas, brackets, braces or quotation marks. Use the Validate button to find the error.

Trailing Commas

Trailing commas are not allowed in objects or arrays in JSON. Strip the unnecessary comma off and re-test the JSON for validation.

Single Quotes

All property names must be quoted and all string values in standard JSON must be enclosed in double quotes. Use double quotes instead of single quotes as appropriate.

Missing Closing Brackets

Each pair of { and } or [ and ] must match. Structure validation can be used to find where the structure is invalid.

Unquoted Property Names

The name of the property in a JSON document must be a string, typically in double-quotes. For instance, you can specify "name": "John" and not name: "John".

Difficult-to-Read JSON

Minified JSON is hard to see by the naked eye. Automatically insert indentation and line breaks with Format JSON.

Large JSON Structures

It might be difficult to navigate in the code view for deeply nested JSON. Explore objects and arrays more easily using the Tree view.

Need Compact JSON

Minify to make the formatted JSON file smaller if there is extra whitespace in the file.

JSON Explained

What Is JSON?

JSON (JavaScript Object Notation) is a lightweight text based representation that's used to store and pass structured data. It supports objects, arrays, key-value pairs, strings, numbers, booleans and null values.

JSON is used in a wide variety of applications including software systems, configuration files, applications, APIs, and websites.

What is JSON Formatting?

Indentation and line breaks are added to the JSON to make it easier for people to read, this process is called JSON formatting.

A formatter does not have to alter the actual information in a valid JSON. Rather, it creates a more streamlined organization of the existing structure.

What is JSON Validation?

JSON validation is checking if a JSON document conforms to the required JSON syntax. Validation can detect the location of the error if there is an error in the JSON so that you can correct it.

What is JSON Minification?

JSON Minification: Clean up line breaks, unnecessary white spaces and indentations from JSON. This yields a smaller, more compact representation which may be beneficial when sending or storing data.

In what situations do you need to Format, Validate or Minify JSON?

Use Format JSON if you must have readable and structured JSON for dev and debugging.

To test if your JSON has been written properly, select Validate JSON.

Use Minify JSON to get a JSON representation without any unnecessary whitespace.

When you want to see the nested JSON objects and arrays, use Tree View.

Frequently Asked Questions

Everything you need to know before you start converting.
What is a JSON Formatter?
A JSON Formatter is a tool used to format the JSON data into a structured format that makes it easier to read and understand.
How to format JSON online?
Copy and paste your JSON into the text box and click Format. A formatted version will be created in the output panel.
Is it a free JSON Formatter?
Yes. The JSON Formatter Online is free and doesn't require an account or software installation.
Is there any tool to validate JSON with?
Yes. Click Validate to validate the syntax of your JSON. The tool can point to the line and column where there is a syntax error.
How to format JSON data using the JSON Format option.7. How to minify JSON data using the JSON Format option.
Formatting adds line breaks and indentation to make the current document easier to read, and minifying will strip away unnecessary whitespace to produce a “smaller” JSON document.
Can I format a JSON file?
Yes. A .json file can be directly uploaded and its contents can be formatted, validated or minified.
Am I uploading my data with the JSON Formatter?
No. The tool will process JSONs in your local browser (JavaScript), no need to send your JSON to a server.
Can I choose the JSON indentation?
Yes. Indentation can be specified as 2 spaces, 4 spaces, and tabs.
Is it possible to use JSON as a tree?
Yes. Once you have processed your JSON, you can click the Tree View button and view the nested objects or arrays in an expandable structure.
Is it possible to download the formatted json?
Yes. Once you've formatted or minified your JSON, you can click the Download button to download a copy of the resulting JSON to your computer.

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