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Query String to JSON Converter

Convert a URL query string to JSON. Repeated keys become arrays and bracket keys like user[name] become nested objects.

Runs in your browserQuery string → JSON
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Example

Input
?q=hello+world&tag=a&tag=b&user[name]=Ada&user[langs][]=en
Output
{
  "q": "hello world",
  "tag": [
    "a",
    "b"
  ],
  "user": {
    "name": "Ada",
    "langs": [
      "en"
    ]
  }
}

How to use the Query String to JSON Converter

  1. Paste or type your Query string into the input area, or open a file from your device.
  2. Adjust the options above the editor if the tool offers any.
  3. Review the JSON result, then copy it or download it as a file.

Privacy and limitations

  • Your data is processed on your device and is not uploaded to any server.

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