JSON Formatter & Validator
Format, validate, minify, and inspect JSON with a cleaner editor so debugging and sharing API payloads is faster.
JSON is the standard data format for web APIs, configuration files, and data exchange. Raw JSON from API responses is often minified into a single line, making it difficult to read and debug. This tool formats minified JSON with proper indentation, validates syntax, highlights errors, and also minifies JSON when you need a compact format for storage or transmission.
Use this free JSON formatter when you need to debug API responses, prettify configuration files, minify output for transport, or quickly confirm that a JSON document is valid before using it in code. It helps frontend developers and API users clean messy payloads without switching tools.
Valid parsed JSON will appear here after formatting or minifying.
JSON Formatting Tips
Short comparisons and tips to help you choose the right option faster.
Formatting vs minifying JSON
Format JSON when you need to read, debug, or review structure. Minify JSON when you want the smallest possible output for transport or compact storage.
When validation matters
Validation is useful before shipping config files, testing API payloads, or pasting data into code. A single missing comma or quote can break the whole document.
How to Use
Follow these quick steps to get the result you need.
Paste raw JSON into the input panel or load a sample payload to test the formatter.
Choose whether you want formatted or minified output, then run validation to catch syntax errors.
Copy the cleaned result or review the parsed object tree and file stats before using it elsewhere.
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