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JSON Minifier

Paste JSON, remove all whitespace. See original vs minified size.

Input
Minified Output

About JSON Minifier

JSON Minifier strips all whitespace, newlines, and indentation from a JSON document, producing the most compact valid representation. Minified JSON is smaller to transmit over the network and faster to parse, making it the preferred format for API responses and stored data.

This tool shows you the original size, minified size, and the percentage reduction so you can see exactly how much bandwidth you'll save. The minified output is ready to use in API requests, configuration files, or inline JavaScript.

While developers work with formatted JSON for readability, minified JSON is what production systems should transmit.

Features

  • Removes all whitespace and indentation
  • Shows original size, minified size, and compression ratio
  • Validates JSON before minifying
  • One-click copy of minified output

Common Use Cases

  • Preparing JSON for API requests to reduce payload size
  • Minifying JSON data files for production bundles
  • Reducing storage size for JSON-based configs
  • Comparing compression ratios between different JSON structures