Aivoryx JSON Beautifier is a fast, free online tool for developers who work with JSON every day. Paste raw, minified or broken JSON and instantly beautify it with clean, configurable indentation, or minify it back down to the smallest valid payload. The editor validates JSON as you type and points to the exact line where a syntax error occurs, so you spend less time hunting for a missing comma or bracket.
Beyond formatting, you get an interactive JSON tree viewer with key and value search, a side-by-side JSON diff to compare two responses or config files line by line, and a converter that turns JSON into CSV, YAML or XML and back. Everything runs 100% in your browser — your data is never uploaded, which makes it safe for API responses, access tokens, database dumps and other sensitive payloads. Once the page has loaded it keeps working offline.
A JSON beautifier (also called a JSON formatter or pretty printer) takes minified or messy JSON and re-indents it with consistent spacing and line breaks so it is easy to read, review and debug.
Yes. It is completely free, with no sign-up and no usage limits.
Yes. Your JSON is parsed and formatted entirely in your browser. Nothing is sent to a server, so the tool is safe for sensitive or internal data.
Paste your JSON and click Minify. All whitespace and line breaks are stripped, leaving the smallest valid JSON for transport or storage.
Yes. The editor validates as you type and highlights the exact line where a syntax error occurs, with a short description of the problem.
Yes. Switch to Diff mode for a line-by-line comparison of two JSON documents with additions and deletions highlighted.
The Convert panel turns JSON into CSV, YAML and XML, and converts those formats back into JSON.