How to remove unnecessary from the title?

Hello.
Suppose the title of my website is "Welcome to website | Shop"
So "Welcome to website" is title of the page and "Shop" is site title.
Can you please tell me, how can i remove site title from title of the page?
Thank you.

If you're using the Admin plugin you can go to the Configuration page, then click the Site tab. You can edit the title of your site there.