Best UX testing method for a nonprofit site?

1. Which testing is used at the time of UX design?
2. Which type of testing is done at user site?

Which testing is used at the time of UX design?

Usability testing is important for creating an optimal user experience and should be done early and often during the design process.

Which type of testing is done at user site?

Usability testing is a method of testing the functionality of a website, app, or other digital product by observing real users as they attempt to complete tasks on it. The users are usually observed by researchers working for a business.