Question 1

How to format JSON online for free with custom indentation?

Accepted Answer

ConverterBox allows you to format JSON strings online for free using 2, 4, or 8-space indentation. Simply paste your raw JSON and click "Format" to generate a readable, pretty-printed version instantly.

Question 2

Is there a private JSON validator that doesn't upload my data?

Accepted Answer

Yes, our JSON validator is 100% private and runs entirely within your browser. Since all validation happens locally, your sensitive JSON data never leaves your computer, ensuring total privacy.

Question 3

Can I minify JSON strings for optimized web performance?

Accepted Answer

Absolutely. Our tool includes a "Minify" feature that removes all whitespace and line breaks from your JSON, creating a compact string that helps optimize web performance and reduce file sizes.

JSON Formatter & Validator | Free Online JSON Viewer

Input JSON

Output

Online JSON formatter tool

Input JSON

Output