Free Online JSON Formatter
Paste messy JSON to get clean, indented formatting plus instant syntax error checking for APIs and configs. Free tool, works in your browser.
JSON Tree View
Why Use Our JSON Formatter?
This JSON utility combines developer-focused formatting controls with strict privacy-first processing, so you can clean and inspect payloads without uploading sensitive data.
Private by Default
All parsing, formatting, and searching happen directly in your browser session.
Built for Developers
Use pretty-print, minify, key sorting, JSONPath querying, and string escaping in one workspace.
Multilingual Workflow
UI and guidance are available in English, Swedish, Spanish, French, and German.
Frequently Asked Questions
Is my JSON uploaded to a server?
No. This JSON formatter processes your content entirely in your browser for privacy-first usage.
Why does my JSON show an error?
Invalid JSON syntax such as trailing commas, missing quotes, or mismatched brackets triggers a line and column error to help you fix it quickly.
What is the difference between formatting and minifying JSON?
Formatting adds indentation and line breaks to make JSON easy to read, while minifying removes whitespace to reduce payload size.