JSON Formatter, Parser and Validator

Format, validate, minify, and inspect JSON in the browser. Your data is processed locally and never uploaded.

JSON Beautifier

Turn compact JSON into readable formatted output with tree and text views.

JSON Minifier

Remove whitespace to reduce payload size for transfer and storage.

Syntax Validation

Detect JSON syntax errors automatically and show clear error messages.

One-click Copy

Copy formatted output to the clipboard in one click.

What is a JSON formatter?

JSON is a lightweight data format used widely in web APIs and configuration files. This online JSON formatter converts compact JSON into readable output, validates syntax, minifies JSON, and lets you inspect complex structures in the browser.

Common use cases

Use it when debugging REST APIs, checking JSON configuration, reviewing logs, or inspecting nested response data. Processing happens locally in the browser, so your JSON is not uploaded to a server.