An HTML tag that helps search engines find and display content in a specific language when a website uses multiple languages. For example, Hreflang tags can help people in the United States find a page in English while a similar search performed in Mexico would return a page in Spanish. Hreflang pages also solve the problem of duplicate content penalties. Hreflang tags help search engines understand when content is customized to specific audiences rather than being duplicated as a search engine optimization (SEO) trick.