Free JSON Pretty Print

Pretty-print JSON with configurable indentation. Choose 2 spaces, 4 spaces, or tabs. Runs instantly in your browser — your data never leaves your machine.

JSON Input
Formatted JSON

🔒 100% Private

All formatting happens in your browser using JavaScript. Nothing is uploaded to any server. Safe for sensitive business data.

⚡ Instant Formatting

No waiting for a server round-trip. Results appear as you type or the moment you drop a file.

🎛️ Configurable Indentation

Choose 2 spaces, 4 spaces, or tabs for indentation. Toggle between pretty-print and minified output with one click.

How to Pretty Print JSON Online

Paste your JSON into the left panel and the pretty-printed output appears instantly on the right. Use the indent selector to choose 2 spaces, 4 spaces, or tabs. Click the Minify button to strip all whitespace for compact output. You can also drag and drop a .json file or use the upload button.

When to Use JSON Pretty Print

Pretty-printing JSON makes it easier to read, debug, and review — especially useful when inspecting API responses, configuration files, or database exports. Readable JSON helps teams collaborate, code reviewers spot issues, and developers quickly understand nested data structures without guessing where objects and arrays begin and end.

Frequently Asked Questions

What is JSON pretty printing?
JSON pretty printing formats raw or minified JSON by adding consistent indentation and line breaks, making it easy to read and understand the data structure at a glance.
Can I choose the indentation?
Yes — you can choose between 2 spaces, 4 spaces, or tabs. The default is 2 spaces, which is the most common convention in JavaScript and TypeScript projects.
Is it the same as JSON formatting?
Yes — pretty printing and formatting are the same thing. Both add indentation and line breaks to make JSON readable. You can also use the JSON Formatter.
Is it free?
Yes — completely free, forever. No sign-up, no account, no usage limits.
Is my data safe?
All formatting happens locally in your browser using JavaScript. Your JSON is never uploaded to any server. It's safe to use with sensitive or proprietary data.
Can I minify instead?
Yes — use the JSON Minifier to remove all whitespace and produce the smallest possible output.