Tools

Query Parameters to JSON Converter

Turn URL query strings into JSON objects for inspection and debugging.

Query Parameters to JSON Converter

Convert URL query strings into JSON so you can inspect and reuse the data easily. This is useful when debugging APIs, logs, or sharing requests with teammates.

How to use the Query Parameters to JSON Converter

  1. Paste the query string.
  2. Click Convert.
  3. Copy the JSON output.

Common use cases

  • Inspecting tracking parameters from URLs.
  • Debugging API requests in logs.
  • Converting query params to JSON for tests.
  • Normalizing query input before processing.

Tips & notes

  • Include or omit the leading ? as needed.
  • Duplicate keys become arrays in the output.
  • Review special characters after decoding.

Related developer tools

  • URL Decoder
  • JSON Formatter
  • CSV to JSON

FAQ

Does it decode percent-encoding?
Yes. Values are decoded automatically.
What about duplicate keys?
Duplicate keys are collected into arrays.
Are empty values kept?
Yes. Empty values are preserved as empty strings.