JSON Formatter

How do I use the JSON Formatter?

1. 1

   Paste JSON.

2. 2

   Choose indent width.

3. 3

   Copy the formatted output.

What is the JSON Formatter?

The JSON Formatter pretty-prints any JSON with your chosen indent width. Invalid JSON is flagged with the exact parser error so you can fix it fast.

Who is the JSON Formatter for?

Developers debugging APIs, QA engineers reviewing payloads, technical writers documenting responses, and analysts inspecting exports.

Why use the JSON Formatter?

• Configurable indent (0–8).
• Clear error messages.
• Handles very large payloads.
• Instant preview.
• Runs offline.

When should I use the JSON Formatter?

• Debugging API responses.
• Reviewing config files.
• Documenting example payloads.
• Sharing readable JSON in chat.
• Preparing fixtures for tests.

Is the JSON Formatter safe and private?

Yes. This tool runs entirely inside your browser - your text is never uploaded, stored on our servers or shared with third parties. You can even disconnect from the internet after the page loads and it will keep working. That makes it safe for confidential notes, drafts, private messages and unpublished work.

How do I get the best results from the JSON Formatter?

• Use two-space indent for compact readability.
• Use JSON Minifier to reverse.
• Combine with JSON to Text for content audits.
• Fix parser errors from the first reported position.

Frequently asked questions

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