Does the Query String Builder send a request?

No. It only constructs a URL locally in your browser.

How is this different from the UTM Builder?

This tool adds arbitrary URL parameters. The UTM Builder is specifically for campaign-tracking parameters.

URL utility

Add arbitrary encoded parameters to a URL while preserving its existing query and fragment.

Base URL

Parameter nameValue

https://api.example.com/items?page=1#results

Your URL and parameters stay in your browser. This tool does not send requests or upload values.