Free browser tool

JSON Minifier

Validate and minify JSON into a compact single-line value.

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JSON minifier

Remove whitespace from valid JSON while preserving the data.

Free JSON minifier

Use this tool to compact API examples, configuration snippets, or JSON payloads while preserving the exact parsed data.

Tool description

Validate JSON and remove unnecessary whitespace to create a compact payload without changing the parsed data.

Common uses

  • Minify API examples, config snippets, and JSON payloads.
  • Check that JSON is valid before sharing or storing it.
  • Create compact JSON for demos, tests, or small embeds.

How to use JSON Minifier

  1. 1. Paste formatted or messy JSON into the input area.
  2. 2. Select Minify JSON.
  3. 3. Copy the compact output after validation succeeds.

FAQs

Does minifying JSON change the data?

No. The tool parses and re-serializes the JSON without extra whitespace.

Can invalid JSON be minified?

No. The input must be valid JSON before it can be safely minified.

Is the JSON sent to a server?

No. JSON parsing and minifying run in your browser.

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