How To Use URL Parameters To Change Your DuckDuckGo Search Settings URL Parameters You can change DuckDuckGo settings via URL parameters by adding them after the search query, for example: https://duckduckgo.com/?q=search&kp=-1&kl=us-en. These parameters are intended for individual use. If using them for any other purpose beyond individual use (e.g. for apps/extensions), please do not remove our b