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JSON Formatter

Pretty-print, minify, validate, and sort JSON keys in the browser. Choose 2- or 4-space indent, import a file, download the result.

PrivateIn your browserInstantUnlimited
135 chars · 12 lines · object

How it works

1

Paste or import JSON

Drop an object or array into the box, or import a .json file. Invalid syntax is flagged as you type.

2

Format, minify, or validate

Format pretty-prints with 2- or 4-space indent. Minify removes whitespace. Validate checks syntax without changing the input. Sort keys alphabetizes every object recursively.

3

Copy or download

Copy the result to your editor or download it as formatted.json.

What is a JSON formatter?

A JSON formatter turns compact or messy JSON into readable indented text, or the reverse. Developers use it to inspect API responses, debug config files, and prepare payloads before sending them. This page runs locally so secrets in your JSON never leave the device.

Why use this tool

  • Pretty-print with 2- or 4-space indent
  • Minify and validate JSON in the browser
  • Sort object keys alphabetically (recursive)
  • Import .json files and download the result
  • Live syntax check as you type
  • Unlimited — no daily cap

Questions

What does JSON Formatter do?

It pretty-prints, minifies, validates, and sorts JSON keys. Everything runs in this tab — your data is never uploaded.

How do I use JSON Formatter?

Paste JSON or import a file, then click Format, Minify, Validate, or Sort keys. Copy or download the result when it looks right.

What does Sort keys do?

It reorders every object key alphabetically, including nested objects. Arrays keep their item order.

Does Validate change my input?

No. Validate only checks syntax and shows Valid JSON or the parser error. It does not modify the input box.

Is my JSON sent to a server?

No. Parsing and formatting run entirely in this tab.

Is there a daily limit?

No. This tool has no daily cap.

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