Convert URL Query Parameters to JSON Instantly

For developers, testers, and API debuggers who need to quickly parse URL query strings into readable JSON objects. Simplify debugging, testing, and development workflows.

Results update live as you type — no button needed. The Example button fills a sample input.

Why use URL Params to JSON?

Instant conversion of URL query parameters to JSON

Handles multiple parameters and special characters

Clean, readable JSON output for easy inspection

No data leaves your browser - fully client-side

Free and unlimited use

FAQ

What is a URL query string?

A URL query string is the part of a URL after the '?' character, containing key-value pairs separated by '&'. For example, in '?name=John&age=30', 'name' and 'age' are keys, and 'John' and '30' are values.

How does this tool handle duplicate parameters?

If a parameter appears multiple times, the tool will keep the last occurrence in the JSON output. For example, '?a=1&a=2' will result in {"a":"2"}.

Can I use this tool with encoded URLs?

Yes, the tool automatically decodes URL-encoded characters (like %20 for space) to provide readable JSON values.

Is my data secure when using this tool?

Absolutely. All processing is done in your browser using JavaScript. Your data is never sent to any server, ensuring complete privacy.

Example input

Try it with this sample — paste it into the box above:

https://example.com/api?page=1&limit=10&sort=desc

How to use URL Params to JSON

  1. Enter or paste your data into the Enter URL or Query String box above.
  2. The result appears instantly in the JSON Output box — everything runs in your browser, nothing is uploaded.
  3. Use Copy or Download to keep the result, or Example to load a sample first.

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