Formatting & Validation

JSON Formatter and Validator

Format, validate, minify, and inspect JSON safely.

Processed locally in your browser

Indent

JSON input

0 B

Input size: 0 B. Drop a .json file here or use Open file.

JSON output

Format, minify, or sort valid JSON to see output.

JSON input

0 B

Input size: 0 B. Drop a .json file here or use Open file.

How to use this tool

Paste JSON, drop a .json file, or select Open file.
Choose indentation and select Format, Minify, or Sort Keys.
Inspect statistics or switch to Tree view to explore values.
Copy the result or download it as a local .json file.

Examples

API response

Format an object with nested arrays and objects.

Configuration file

Sort keys for predictable reviews and diffs.

Frequently asked questions

Is my JSON uploaded?

No. Parsing, formatting, searching, statistics, and file reading happen entirely inside your browser.

Does sorting change array order?

No. Sort Keys alphabetizes object keys recursively while preserving every array's original order.

Why is there a file-size limit?

The limit protects the browser tab from becoming unresponsive when processing unusually large input.

About this tool

This browser-based JSON formatter validates syntax, produces readable or minified output, sorts object keys, calculates structural statistics, and renders an optional searchable tree without executing or uploading JSON content.

Formatting & Validation

JSON Formatter and Validator

Format, validate, minify, and inspect JSON safely.

Processed locally in your browser

Indent

JSON input

0 B

Input size: 0 B. Drop a .json file here or use Open file.

JSON output

Format, minify, or sort valid JSON to see output.

JSON input

0 B

Input size: 0 B. Drop a .json file here or use Open file.

How to use this tool

Paste JSON, drop a .json file, or select Open file.
Choose indentation and select Format, Minify, or Sort Keys.
Inspect statistics or switch to Tree view to explore values.
Copy the result or download it as a local .json file.

Examples

API response

Format an object with nested arrays and objects.

Configuration file

Sort keys for predictable reviews and diffs.

Frequently asked questions

Is my JSON uploaded?

No. Parsing, formatting, searching, statistics, and file reading happen entirely inside your browser.

Does sorting change array order?

No. Sort Keys alphabetizes object keys recursively while preserving every array's original order.

Why is there a file-size limit?

The limit protects the browser tab from becoming unresponsive when processing unusually large input.