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What is JSON Formatter?

Free — no account needed

JSON Formatter is one of our Conversion & Formatting tools. Pretty-print, minify, validate, and sort JSON keys online. Paste or type your text on the left and the converted output appears immediately, ready to copy. It runs entirely in your browser, so nothing is uploaded and no account is needed. More in this collection: Convert between data formats like JSON, YAML, XML, SQL, and Markdown.

People also search for

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How to use JSON Formatter

  1. 1

    Open JSON Formatter and paste your text into the input box.

  2. 2

    Adjust any options — the output updates as you change them.

  3. 3

    Copy the result, or download it as a file.

Key Features

Updates as you type

Output refreshes on every keystroke, so you can see the effect of each change.

One-click copy

Take the result straight to your clipboard, or save it as a file.

Never leaves your browser

Processing happens on your own device — nothing is uploaded to us.

REST API

Automate it from your own code with an API key.

Works on any device

Full functionality on phone, tablet, and desktop.

Who Is This For?

Writers and editors

Clean up and reshape text without leaving the browser.

Developers

Reformat and inspect data mid-task.

Students

Get assignments into the right shape quickly.

Frequently Asked Questions

Is JSON Formatter free?

Yes. JSON Formatter runs in your browser and is free to use, with no account, no watermark, and no usage cap.

Do I need to create an account?

No. Open the page and use it. An account only becomes useful if you want to save tools to your own toolbox.

What happens to my data?

JSON Formatter does its work on your own device. Your input is never uploaded to us, which is why it also works with sensitive material.

Is there a limit on how much text I can paste?

No fixed cap. Very large inputs are limited only by what your browser can hold in memory.

Can I use JSON Formatter from my own code?

Yes. It has a REST endpoint — authenticate with an API key in the X-API-Key header. The API docs cover the request and response shape.

Do I need to install anything?

No. JSON Formatter runs in the browser on desktop, tablet, and phone. There is nothing to download and nothing to keep updated.

More detail on plans is on our pricing page, and how AI-powered tools handle your data is covered on the AI processing page.

More Conversion & Formatting

YAML Formatter
Format, validate, and minify YAML online.
XML Formatter
Format, validate, and minify XML online.
SQL Formatter
Beautify and format SQL queries.
Minify / Beautify
Minify or beautify JavaScript, CSS, HTML.
JSON to YAML Converter
Convert between JSON and YAML formats.
Markdown Editor
Write and preview Markdown with live rendering.

API Keys

Generate API keys for programmatic access to AnythingText tools. Include X-API-Key header in your requests.

Generate New API Key

Your API Keys

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Quick Start

Use your API key in the X-API-Key header:

curl -X POST https://anythingtext.com/api/tools/case \
  -H "Content-Type: application/json" \
  -H "X-API-Key: atk_your_key_here" \
  -d '{"text": "hello world", "mode": "upper"}'

See API Documentation for all available endpoints.

How It Works

Three simple steps to transform your content. No signup required for most tools.

1

Choose a tool

Browse our catalog or search for exactly what you need. PDF, audio, AI, and developer tools — all in one place.

2

Upload or type

Drop a file, record audio, or paste your text directly. Most tools run in your browser — nothing to install.

3

Get results instantly

Download, copy, or share your results in seconds. Everything is fast, completely private, and free to use.