JSON Formatter

The JSON Formatter and Validator is an essential tool for developers working with APIs, configuration files, and data structures. Paste your raw, minified, or partially formatted JSON into the input panel on the left. The tool immediately attempts to validate it — if your JSON contains any syntax errors, you will see a red error message with the exact problem described, including the location of the invalid character or missing token. Once your JSON is valid, click Format to convert it into a beautifully indented, human-readable structure. Click Minify to compress it back to a single line — ideal for production API payloads or reducing data transfer size. Use Sort Keys to alphabetically reorder all object keys at every nesting level; this makes it much easier to compare two JSON objects or spot differences between API versions. The stats panel at the bottom shows the total number of keys, array items, and maximum nesting depth, giving you a quick structural overview of large JSON payloads. Click the Copy button to copy the formatted output directly to your clipboard. This tool is particularly useful for debugging REST API responses, reviewing webhook payloads, working with configuration files, and learning the JSON format. Everything processes locally in your browser — your data is never sent to any server, making it safe for API keys, tokens, and other sensitive payloads.