Here are some HTML tags that can help optimize your webpage for search engines:

1 <title> - The title tag provides a brief and concise description of your page. It appears in the search engine results and should be unique for each page.

2 <meta description> - The meta description provides a more detailed summary of your page's content. It's used by search engines to display a brief snippet about your page in the search results.

3 <h1> - The H1 tag is used to indicate the main heading of a page. It's important to have a unique and descriptive H1 tag for each page.

4 <img> - Use the alt attribute to describe images on your page. This is important for accessibility and for search engines that cannot see images.

5 <header> - Use the header tag to provide a container for introductory content or a set of navigation links.

6 <main> - The main tag is used to define the main content of a document. It should be unique to the document and exclude content that is repeated across a set of pages.

7 <nav> - Use the nav tag to define a section of a page that contains navigation links.

8 <article> - The article tag is used to represent a self-contained composition in a document, such as a blog post or news story.

9 <section> - The section tag is used to define a standalone section of a document, such as a chapter or a set of related content.

10 <aside> - The aside tag is used to define content that is tangentially related to the main content of a document, such as a pull quote or a sidebar.

In addition to these HTML tags, there are other technical aspects of SEO that you should be aware of, such as creating a sitemap, using appropriate URL structures, and optimizing your page load times.