How do I format JSON online?

Paste your JSON into ZapFile's JSON Formatter and it will instantly format it with proper indentation and syntax highlighting. You can also minify, validate, and copy the result.

Why is my JSON invalid?

Common JSON errors include trailing commas, single quotes instead of double quotes, unquoted keys, and missing brackets. ZapFile's formatter highlights the exact line with the error.

What is the difference between JSON formatting and minification?

Formatting (pretty-print) adds indentation and line breaks for readability. Minification removes all whitespace to reduce file size for production use.

Yes, all ZapFile tools are completely free with no hidden costs or subscriptions.

Absolutely. All processing happens directly in your browser. Your files are never uploaded to any server.

Do I need to create an account?

No. ZapFile requires no registration, login, or account creation.

Does this tool work offline?

Most tools work offline after the first load. ZapFile is a Progressive Web App you can install.

Can I use this on mobile?

Yes! All tools are fully responsive and work on mobile devices.

Home/Tools/JSON Formatter

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JSON Formatter

Format, minify, and validate JSON data instantly

Your files never leave your browser

Indent:

Input JSON

Runs on your device, not our servers

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