Parse Query Strings to JSON in Seconds

For developers, testers, and API debuggers who need to quickly convert URL query parameters into readable JSON. Stop manually decoding strings—get structured data instantly.

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

Why use Query String Parser?

Instant conversion from query string to JSON

Handles multiple parameters and URL encoding

Clean, readable output for easy debugging

Free and no sign-up required

Works on any device with a browser

FAQ

What is a query string?

A query string is the part of a URL after the '?' that contains 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 parser handle URL-encoded characters?

The parser automatically decodes URL-encoded characters (e.g., %20 becomes a space) so you get the actual values in the JSON output.

Can I parse query strings without the leading '?'

Yes, the parser works with or without the leading '?'. Simply paste the string as is.

Is this tool free to use?

Absolutely. This tool is free and requires no registration. Use it as often as you need.

Example input

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

?name=John&age=30

How to use Query String Parser

  1. Enter or paste your data into the 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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