JSON Formatter & Validator

JSON formatting example

The JSON data below is valid, but because it is on a single line it can be hard to read, especially with larger data structures.

Unformatted JSON

{"name":"Tekno Danışman","services":["Özel Yazılım","Web Uygulama","Danışmanlık"],"active":true}

Formatted JSON

{
    "name": "Tekno Danışman",
    "services": [
        "Özel Yazılım",
        "Web Uygulama",
        "Danışmanlık"
    ],
    "active": true
}

After formatting, object fields and array elements become more distinct. The internal structure of the data is not changed; only whitespace, line breaks and indentation are adjusted.

Common JSON mistakes

1. Omitting commas between fields

{
    "name": "Tekno Danışman"
    "active": true
}

A comma is missing after the name field. If an object contains more than one field, the fields must be separated by commas.

2. Using single quotes

{
    'name': 'Tekno Danışman'
}

In the JSON standard, keys and text values must be written with double quotes. Although single quotes can be used in JavaScript objects, they are not valid JSON.

3. Leaving a comma after the last element

{
    "name": "Tekno Danışman",
    "active": true,
}

Using a comma after the last field results in invalid JSON.

4. Not closing brackets

{
    "services": [
        "Yazılım",
        "Danışmanlık"
}

In this example, the square bracket used for the array is not closed. In nested objects and arrays, all brackets must be closed in the correct order.

What is JSON Formatter & Validator used for?

JSON Formatter & Validator arranges JSON data in a readable form and checks whether the data conforms to the standard JSON syntax rules.

What is a JSON Validator?

A JSON Validator is a tool that checks whether the entered JSON data conforms to the standard JSON syntax rules.

Are JSON Beautifier and JSON Formatter the same thing?

Yes. The terms JSON Beautifier and JSON Formatter are generally used to describe tools that make JSON data readable and indent it appropriately.

Why does JSON produce an error?

A missing comma, the use of single quotes, an unclosed curly or square bracket, a trailing comma after the last element and the use of invalid values can all cause a JSON error.

What is JSON minification used for?

JSON minification removes unnecessary whitespace, indentation and line breaks so that the JSON data takes up less space. The content and structure of the data are not changed.

Is my JSON data sent to a server?

No. Formatting, validation and minification in this JSON Formatter & Validator tool are performed directly in your browser. The JSON data you enter is not sent to a server.

How do you open a JSON file?

JSON files can be opened with code editors such as Visual Studio Code, Notepad++ and Visual Studio, with standard text editors, or with online JSON viewers.

What is a JSON parse error?

A JSON parse error indicates that the application could not convert the JSON data into a valid object. This error is usually caused by syntax problems such as a missing comma, an incorrect quotation mark or an unclosed bracket.

Can comments be used in JSON?

No. Comments are not supported in the standard JSON format. If you need to add an explanation, you can create a dedicated field and add the explanation text as its value.

Can single quotes be used in JSON?

No. In valid JSON, key names and text values must be written inside standard double quotation marks. Using single quotes results in invalid JSON.

Does formatting with JSON Formatter change the data?

No. Formatting does not change the fields, values or data types of the JSON data. It only changes the whitespace, line breaks and indentation, making the data more readable.

Is JSON Formatter & Validator free?

Yes. You can use the Tekno Danışman JSON Formatter & Validator tool for free and without registration. You can format, validate, minify and copy your JSON data and download it as a file.