JSON Minifier
Compact JSON by removing all unnecessary whitespace and formatting
All processing happens in your browser. No data is sent to any server.
Minified Output
Why This Tool
Formatted JSON with indentation is great for reading but wastes bytes in API payloads, config files, and storage. This tool strips all unnecessary whitespace to produce the smallest valid JSON output.
How It Works
Paste your formatted JSON into the editor. The tool removes all whitespace and newlines, outputting a single-line compact JSON string. Copy the result or see the size reduction percentage.