Keywords are important for SEO because they help search engines understand the content and context of a webpage. By including relevant keywords in the content, metadata, alt tags, and URLs, website owners can signal to search engines what the page is about, making it more likely to rank well for relevant queries.
It is important to select your keywords thoroughly and not to use them excessively (i.e., you should not mention the same keywords in the content, meta information, and alt texts of the page) because this can harm your website's SEO.
If you use Hostinger Website Builder and want to add keywords, open the page SEO settings. Here, you may add up to three keywords per page:
To add keywords to your product pages, refer here: Website Builder: Product SEO Settings