How to Use JSON Formatter VS Code Style
VS Code's JSON Formatting, Without VS Code
When you need to quickly prettify a JSON API response but don't want to open your IDE or paste sensitive data into a random website, this tool is your answer.
It formats JSON with strict 2-space or 4-space indentation (configurable), applies syntax highlighting that mirrors VS Code's default Dark+ theme, validates the JSON structure, and shows line numbers. No data ever leaves your browser — safe for production API payloads, authentication tokens, and config files.
Frequently Asked Questions
Yes, 100% client-side processing ensures your JSON payload never leaves your browser.
Yes. Invalid JSON is flagged with the exact line and character position of the error.