Toolkit / Developer Tools

JSON Formatter

Format, validate, and minify JSON so it is easier to read, debug, compare, and share.

Works in browserFast page

Privacy note: Developer inputs are handled locally for supported tools. Avoid pasting production secrets, private keys, or credentials into any tool unless you understand the risk.

Limitations: JSON must be valid before it can be formatted.

JSON Formatter

Format, validate, sort, minify, and inspect JSON locally.

Input JSONFormatted output

{
  "name": "Toolkit",
  "tools": [
    "JSON Formatter",
    "QR Code Generator"
  ],
  "private": true
}

Valid JSON1 lines80 bytes

Indent Sort keys

How json formatter works

Paste JSON into the editor and Toolkit parses it, formats it with indentation, or minifies it.

Validation errors help you find syntax issues such as missing quotes, extra commas, or mismatched brackets.

Privacy

Developer inputs are handled locally for supported tools. Avoid pasting production secrets, private keys, or credentials into any tool unless you understand the risk.

Limitations

JSON must be valid before it can be formatted.
Very large JSON files can slow down the browser.
Formatting does not verify whether the data matches your API schema.

FAQs

What does a JSON formatter do?

It turns compact or messy JSON into indented, readable JSON and can also minify it for transport.

Why is my JSON invalid?

Common causes include trailing commas, unquoted keys, single quotes, comments, or missing brackets.

Can this validate an API schema?

No. It validates JSON syntax, not whether the object matches a specific schema.

Is it safe to paste secrets?

Avoid pasting production secrets or private tokens into any formatter unless you understand your browser and device environment.