In SEO, “noindex” is a tag that tells search engines not to show a specific webpage in their results. You can add this tag in the page’s HTML or through an HTTP header. It’s useful for hiding pages like login screens or thank-you messages that don’t offer much value. Using noindex helps keep your site looking good and makes sure important pages get more attention from search engines. Just remember, it won’t remove the page immediately; it just stops future indexing.