The on-page result of our SEO test tool shows you broken links, the amount of headings in need of improvement, as well as page title and description tags that need to be optimized. Accordingly, a good on-page result would show correctly selected headings, and page title and description tags that are neither too long, too short, nor duplicated. Furthermore, the site SEO check also highlights faulty links. The following sections explain what these individual aspects are and what you have to consider in more detail. Links The word link is short for the technical IT term, hyperlink, which are code elements used to allow navigation to another webpage. Links are a core component of the internet, since they connect individual websites together, allowing users to navigate easily across the net. There are two types of link: internal links navigate within the same website, while external links (also known as backlinks) link from one site to another. Backlinks are especially significant for off-page SEO because search engines treat them as recommendations from one site to another. On the other hand, internal SEO links are an important factor for on-page optimization: they facilitate a user-friendly website structure, which also allows web crawlers (also known as spiders) to assess the SEO value of a site. The idea is that the easier it is for a crawler to follow an internal SEO link structure, the easier it is for a human user to navigate the website. The IONOS SEO link check reliably evaluates the link profile of your website, giving you concrete data. In the on-page results, you will see an overview of all the broken links on your site. On this basis, you can strengthen and optimize your internal linking structure with SEO link building. Page titles The page title, or meta title, is an important HTML tag that appears at the start of an HTML document, even before other metadata. This SEO title tag is particularly important for search engine crawlers, since they are shown as headings in SERPs. Their length, calculated in pixels rather than characters, is crucial to ensuring the title is displayed in full. Exceeding the pixel limit is undesirable, since the end of the SEO title is cut off and replaced with an ellipsis (…). Strong page titles mostly contain the brand name and a relevant keyword. Our SEO analyzer helps you to optimize your title tags; the onpage results include an SEO title check showing which ones are search engine-friendly and which ones need optimizing. Page descriptions Page descriptions, or meta descriptions, are also covered by our SEO Checker. You receive important information regarding the optimization of these meta tags. They are displayed below the page title on SERPS and serve to summarize the content of the page briefly and informatively. This makes meta description tags significant both for good SEO and encouraging user clicks. They should always be unique and contain no more than 160 characters, so as not to be trimmed by the search engine, but can include special characters to attract the interest of readers. Including the brand name and discreetly placed keywords in the meta description is useful for SEO, since they are highlighted in SERPs and also help to orient web users. Our SEO Checker tool performs meta description analysis to show you, for example, how many pages on your website have duplicate descriptions, or no description whatsoever. Furthermore, guidance is given on the correct meta description length. Headings Heading or header tags are HTML elements used on a webpage, which are also highly important for search engine rankings. They are distinguished in order of descending importance, from the main SEO title h1, to subheadings h2 to h6. Heading tags essentially enable the naming and structuring of different sections of content. For SEO, h1 tags at the start of HTML documents are most important because they contain keywords that immediately show both users and crawlers what the content is about. When they are clearly written and contain highly relevant keywords, heading tags serve as positive SEO signals. They ought to be as short, succinct and informative as possible. From IONOS's SEO site checkup, you can find out how your heading tags fare from a search engine perspective, and where there is room for improvement.