MintSEOPro

JSON Formatter

Format, validate and minify JSON data.

100% Free No sign-up Private

How to Use the JSON Formatter?

Format, validate, minify and sort JSON data, with clear error messages.

  1. 1

    Paste your JSON into the input box.

  2. 2

    Choose your indentation: 2 spaces, 4 spaces or Tabs.

  3. 3

    Click Format JSON to beautify it, Minify to compress it, or Sort keys to order it.

  4. 4

    If the JSON is invalid, read the error with its line and column number.

  5. 5

    Click Copy or Download to save the result.

Benefits of Using Our JSON Formatter

Validate instantly

Find syntax errors with the exact line and column where they occur.

Beautify or minify

Make JSON readable for debugging or compact for production.

Sort keys

Order object keys alphabetically to compare data more easily.

Private by design

Your data is processed only in your browser, never uploaded.

Who Can Use This JSON Formatter?

Developers

Debug API responses and config files.

Data analysts

Read and clean JSON exports.

QA testers

Validate test data before use.

Students

Learn JSON structure with clear formatting.

Frequently Asked Questions

Everything you need to know about the JSON Formatter.

What is JSON?

JSON, short for JavaScript Object Notation, is a lightweight text format for storing and exchanging data. It uses objects with key and value pairs and arrays, and is used by almost every web API.

Why is my JSON invalid?

Common mistakes are trailing commas after the last item, single quotes instead of double quotes, missing quotes around keys, and comments, which standard JSON does not allow. The error message shows where the problem is.

Is my JSON data safe?

Yes. Formatting and validation happen entirely in your browser. Your data is not sent to our servers, so you can safely format API responses and private configuration.

What is the difference between formatting and minifying?

Formatting adds line breaks and indentation so people can read the data. Minifying removes all unnecessary spaces to make the file as small as possible for computers and faster transfer.

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