Online JSON Formatter

JSON Formatter is an online tool to format JSON text, documents, or files. Our JSON beautifier indents JSON string and highlights the JSON syntax. The JSON Viewer shows the objects in a human-readable tree-like structure. You can quickly expand/collapse the nodes to get a concise view. You can also choose whether to convert the property names to the camel case. Convert dates in your JSON data to ISO or Microsoft date formats. Optionally, you can remove escape characters from the created JSON.

All processing happens on the client-side, locally in your browser. No data is uploaded.

Paste JSON text below

Formatted JSON

Settings

How the input is converted. Each is explained below.

Indent

If selected, the output is indented, one property or item per line; otherwise it is written on one line

Keys In Quotes

If off, property names are written without quotes, as in a JavaScript object (not valid JSON)

Expanded Braces

If selected, an object's opening brace is put on its own line

Format Embedded JSON

If selected, a string that is itself JSON is formatted in place as part of the output

Remove Escape Characters

If selected, the backslash before every double quote is removed first, for JSON that was escaped as a string

Case Conversion

Property names are changed to this case

Quote Character

The character that encloses names and strings: " for JSON, or ' for JavaScript

History

2018-12-01Support for removing escape characters
2018-06-29Support for customizing quote character
2018-06-29New Data tools -
2017-09-24Support for embedded JSON formatting
2017-09-23Expanded brace style & setting to skip adding quotes around keys
2017-09-19Date format settings
2017-09-02Tool Launched

Background

JavaScript Object Notation (JSON), pronounced as Jason, is the most common data interchange format on the web. Douglas Crockford first released the JSON specification in the early 2000s. It is a simple format that is easier to comprehend than XML. It is also smaller in size because it does not have closing tags. A wide variety of programming languages can parse JSON files. They also support the serialization of data structures to JSON. You can copy JSON text to JavaScript and start using them without any modifications.

JSON Validator

This tool also validates JSON. Invalid JSON data causes the formatting to fail. The error details, such as description, line number, and column number, are shown above the input text box.