Question 1

What is JSON Pretty?

Accepted Answer

JSON Pretty is an online tool that formats and validates JSON in your browser. Paste raw JSON and it is pretty-printed instantly with two-space indentation.

Question 2

Is my data safe with JSON Pretty?

Accepted Answer

Yes. Everything runs in your browser using JavaScript. Your JSON is never uploaded to a server and nothing is stored.

Question 3

Does JSON Pretty work offline?

Accepted Answer

Yes. Once the page is loaded, formatting and validation run locally — no network requests are made.

Question 4

How does JSON Pretty handle invalid JSON?

Accepted Answer

Invalid JSON is highlighted with the exact error message from the parser and a snippet showing the broken fragment so you can find the issue quickly.

Question 5

Can JSON Pretty handle large JSON files?

Accepted Answer

Yes. Multi-megabyte files are supported. Upload a .json file or paste raw text and JSON Pretty will format it in a web worker so the UI stays responsive.

JSON Pretty — Powerful Online Formatter, Editor & Validator