Final answer:
Cookies are not found on a blog page, but tags, widgets, and meta description are commonly used elements.
Step-by-step explanation:
The element that would not be found on a blog page is Cookies. Cookies are small pieces of data that are stored on a user's computer and are commonly used to remember information about the user, such as login credentials or browsing preferences. They are not a visible element on a blog page.
On the other hand, Tags are commonly used on blog pages to categorize and organize content. Widgets are often used to add functionality, such as a search bar or recent posts section. Meta description is a brief summary of the blog post that appears in search engine results.