Validate, pretty print, minify, and remove hidden characters from JSON with full client-side privacy.
Your JSON result will appear here…
Our JSON Formatter goes beyond basic pretty-printing. It specifically targets and strips invisible Unicode characters (like zero-width spaces, BOM, and NBSP) that commonly corrupt JSON payloads when copying from APIs, logs, or AI models like ChatGPT.
Your data privacy is critical. This JSON validation and formatting tool operates entirely within your browser. We never transmit, log, or store your JSON payloads on external servers.