JSON-Formatierer
Format, validate and prettify JSON instantly — free, no signup required.
About JSON Formatter
This free JSON formatter instantly validates and prettifies your JSON with proper indentation. Use it to debug API responses, config files, or any JSON data. The minify option removes whitespace to reduce file size.
About this tool
JSON Formatter validates, formats and prettifies JSON data instantly. Paste raw or minified JSON and see it beautifully indented and colour-highlighted. Syntax errors are detected in real time. All processing happens entirely in your browser using JavaScript — your JSON data never leaves your device, making it safe for API keys, tokens and confidential configuration files.