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On-Page Optimisation.

On-page optimisation covers all SEO measures that take place directly on your own website: content, page titles, headings, internal links, images, structured data and the technical soundness of each individual page. The aim is for search engines and AI systems to understand clearly which question a page answers, and for visitors to find what they were looking for there.

Illustration of "On-Page Optimisation": Document "Onpage-Check · /badumbau" Onpage-Check · /badumbauTitle with main termOne H1Meta descriptionInternal linksImages compressedSchema missing

On-Page Optimisation — Explained in Detail

On-page optimisation is the part of search engine optimisation that a company has entirely in its own hands. Everything on your own domain belongs to it: the visible text, the title tag and the meta description, the structure with H1 and H2 headings, the URL, the images and their alt text, the internal linking and the structured data. Its counterpart is off-page optimisation, which deals with signals from outside, above all links and mentions.

The core of all on-page work is assignment: one page should serve exactly one topic with exactly one search intent. If a single page covers 'web design', 'SEO' and 'Google Ads' at the same time, Google gets no clear answer as to what the page should rank for. Conversely, two pages answering the same question lead to keyword cannibalisation. Clean on-page optimisation therefore does not start with the text but with the question of which page takes on which keyword.

Then comes the actual work on the page. The core question is answered directly in the first few sentences, because readers as well as systems such as AI Overviews prefer passages that settle a question without detours. The headings reflect the questions customers actually ask. Technical terms are explained, prices and conditions stated concretely, and every page links internally to the next sensible steps. Technically, the page must be indexable, load quickly and work on a smartphone.

On-page optimisation is not a one-off pass. Search behaviour shifts, competitors build better pages, offers change. If you regularly compare your most important pages with the data from Google Search Console, you can see which queries a page is already collecting impressions for but not yet getting clicks, and improve exactly there. That is usually the quickest lever an SME has in search.

The most important on-page factors at a glance

In terms of content, what counts is topic coverage, clarity and freshness: does the page answer the question completely, including the follow-up questions? Structurally, what counts is a single H1, a logical H2 outline, descriptive URLs and internal linking that makes important pages reachable in a few clicks. Technically, what counts is indexability, a correct canonical tag, loading time and Core Web Vitals, as well as structured data according to Schema.org.

What no longer counts are mechanical recipes such as a particular keyword density or a minimum number of words. Google assesses whether a page is helpful, not whether a term appears five or seven times. A short text that answers a simple question completely can perform better than a long text that writes around the topic.

Example: the services page of a Zurich joinery

A joinery in Zurich has a 'Services' page on which kitchen fitting, built-in wardrobes, repairs and staircases are each mentioned in two sentences. The page ranks for none of these terms. On-page optimisation splits the offer into separate pages: 'Made-to-measure built-in wardrobes Zurich' gets its own URL, a title with exactly this term, an H1 that states the promise clearly, photos of real projects with descriptive alt text, answers to typical questions (delivery time, materials, how the quote works) and a clear way to get in touch.

The overview page remains and links to the new detail pages; these link back and to each other where the content fits. Search Console then shows whether the new page collects impressions for 'built-in wardrobe Zurich' and related queries. How we build such pages is shown on our page on SEO optimisation in Zurich; the free SEO check gives a first look at your own page.

Frequently Asked Questions About On-Page Optimisation

On-page optimisation concerns everything on your own website: content, titles, headings, internal links, images and technology. Off-page optimisation concerns signals from outside, above all backlinks, mentions and reviews. The two work together, but the on-page side is entirely in your hands and is usually the first step.

That depends on how often Google recrawls the page and how strong the competition is. Changes to title and content often become visible in Search Console within days to a few weeks; stable ranking improvements take longer in competitive fields. There is no guarantee.

No. Google has stated repeatedly that there is no fixed keyword density to aim for. What matters more is that the term appears where it belongs (title, H1, first sentences) and that the text answers the question completely, including related terms and follow-up questions.

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