JSON Beautifier Online
Beautify and format JSON data instantly with syntax highlighting and customizable indentation. 100% private — everything runs in your browser. No login required.
Input JSON 0 chars
Output
Why Beautify JSON?
Readability
Minified JSON is a single line of text that's impossible for humans to read. Beautification adds indentation and line breaks, making the structure immediately visible and easy to understand.
Debugging
When debugging APIs or config files, you need to quickly find specific keys and values. Beautified JSON lets you scan the structure visually and locate the data you need.
Code Review
Beautified JSON is essential for code reviews. Reviewers need to see the full structure and values clearly. Our syntax highlighting makes keys, strings, and numbers instantly distinguishable.
Frequently Asked Questions
What does beautifying JSON do?
Beautifying JSON adds proper indentation and line breaks to make it readable. Minified JSON is one long line of text — beautification formats it with consistent spacing so developers can read and edit it easily.
What indentation should I use?
2 spaces is the most common indentation style used in JavaScript and JSON. 4 spaces is popular in Python projects. Tabs are used in some configurations. Choose the style that matches your team's coding standards.
Can I minify JSON too?
Yes. Use our JSON Formatter tool to minify JSON, which removes all whitespace and produces the smallest possible file. This is useful for production deployment where file size matters.
Is my JSON sent to a server?
No. All JSON formatting happens in your browser. Your data never leaves your device.