I want to test my web application for performance, but I do not know at all which site I should contact. I asked my friends, but they also don't know.?

Hi, friend. I asked a friend of mine who is developing web applications. He told me about this site https://u-tor.com/services/performance-testing There is a manual check of your applications. He uses it all the time and praised him very much. I hope he helps you as much as he helps him all the time. He said that you will be satisfied with the result of the work.