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JSON Formatter / Beautifier

LiveDeveloper Utilities

JSON Formatter / Beautifier is a free, privacy-first browser tool for developers who work with APIs, config files, and data pipelines. Paste raw or minified JSON to instantly format it with configurable indentation (2 spaces, 4 spaces, or tabs), minify it for production, or validate it with clear error messages. Built for speed — no server calls, no data storage, no sign-up required.

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Output Summary

Export and sharing workflow optimized for web content formats.

Key Features

Instant JSON formatting with syntax highlighting
Configurable indentation: 2 spaces, 4 spaces, or tabs
One-click JSON minification for production use
Real-time JSON validation with clear error messages
Copy formatted or minified JSON to clipboard
100% client-side — no data sent to any server
Dark mode and light mode support
Responsive layout for desktop, tablet, and mobile
Load sample JSON to quickly test the tool

FAQs

What does JSON Formatter / Beautifier do?

It takes raw, minified, or messy JSON and formats it with proper indentation so it is easy to read. You can also minify JSON for production or validate it to find syntax errors instantly.

Is my JSON data safe when using this tool?

Yes. Everything runs 100% in your browser. No JSON data is ever sent to a server, stored, or logged. Your data stays on your device.

What indentation options are available?

You can choose between 2 spaces, 4 spaces, or tab indentation. The tool remembers your preference for future visits.

Can I use this tool on mobile?

Yes. The JSON Formatter is fully responsive and works on phones, tablets, and desktops with an optimized layout for each screen size.

Does it support large JSON files?

The tool handles large JSON payloads efficiently since all processing happens client-side in your browser. Performance depends on your device but works well for typical API responses and config files.

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