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JSON Minifier

Minify and compress JSON

JSON Input
Output
About This Tool
JSON minification removes all unnecessary whitespace from a JSON document while keeping the data structure intact. The result is a smaller payload that transfers faster over HTTP.
Minified JSON is ideal for production APIs, config files in bundles, and any scenario where bandwidth or file size matters.
How to Use
  1. Paste your JSON into the input panel.
  2. Click Min to minify or Fmt to format with 2-space indentation.
  3. The tool validates the JSON first — if the input is malformed, an error message explains the exact problem.
  4. Use the Copy button to copy the output.
Use Cases
Compress REST API responses to reduce transfer size. Minimize JSON config files before deployment. Optimize static JSON data files in frontend bundles.
FAQ
  • Does minification change the JSON data? — No. Minification only removes whitespace — the actual data and structure remain unchanged.
  • What is the difference between Min and Fmt? — Fmt formats the JSON with 2-space indentation. Min removes all whitespace to minimize file size.
  • What happens with invalid JSON? — The tool parses the JSON first. If it is invalid, it displays the exact parsing error.