Pimcore Document Settings
Open a page and switch from the "Edit" tab to the "Settings" tab.
In the page settings you can edit the title (which you already set when you created the page). You also have space for a description. The description serves the better indexing of search engines (e.g. Google) and is also displayed in the search result.
If a website has a deep structure, very long URLs can be created: "www.yourdomain.com/das/ist/eine/lange/url". This is unpleasant, especially if you want to refer to printed marketing material on this page. To prevent this, you can define a shortened or changed URL in the Pretty URL: "www.yourdomain.com/url".