On-page SEO – what it is and how to optimise your pages

Definition

On-page SEO means optimising everything that sits directly on the web page – content, heading structure, metadata and internal linking – to make the page more relevant and easier to understand for search engines and users.

What is on-page SEO?

On-page SEO – sometimes called on-site SEO – is the part of search engine optimisation that covers everything you can control directly on the page: content, heading structure, title tags, meta descriptions, URL structure, internal linking and schema markup. These are the factors that help search engines understand what the page is about and decide whether the content matches what the user is actually looking for.

Unlike technical SEO, which makes sure search engines can reach and index the page, on-page SEO makes sure the page, once found, comes across as relevant and valuable enough to rank well.

The most important on-page SEO factors

• Title tag – The single most important on-page signal. It should contain the primary keyword and be written to attract clicks. Keep it under 60 characters so that it is not cut off in the search results
• H1 heading – One per page. It should state the page's topic clearly and match the title tag in intent, though the two do not have to be identical
• H2/H3 structure – The heading structure helps search engines understand the page's subtopics and how they fit together. H2s phrased as questions increase the chance of a featured snippet and AI citations
• Meta description – Does not affect rankings directly but drives CTR. A well-written meta description is ad copy that earns the click – include a clear promise and an implicit CTA
• Content quality and depth – Does the page actually answer the user's question better than competing pages? Depth and breadth within the topic signal topical authority
• URL structure – A short, readable URL that contains the keyword strengthens the page's relevance and is easier to link to with good anchor text
• Internal linking – How the page is linked from the rest of the website signals priority to search engines and distributes link equity to the right pages
• Image optimisation – Alt text, compression and file names affect both image search and the page's load time

On-page SEO and search intent

Search intent – what the user actually wants to achieve with the search – is at the heart of all on-page optimisation. Having the right keyword is not enough if the page does not match the intent. Google classifies search intent into four types:

• Informational – The user wants to learn something. Calls for comprehensive, well-structured content with clear answers
• Navigational – The user is looking for a specific website or page. Optimise for brand and page name
• Commercial investigation – The user is comparing options before deciding. Calls for comparisons, concrete benefits and specific information
• Transactional – The user wants to complete an action. Calls for a clear CTA and conversion-optimised content

A page that does not match the search intent rarely ranks well, however well placed the keywords are. Google uses aggregated click data to judge whether the results meet searchers' needs, even though individual metrics such as dwell time and bounce rate have not been confirmed as signals. Keyword research, and careful on-page optimisation based on it, matter more today than ever.

How to create content that actually ranks (hint: quality)

On-page SEO ultimately comes down to how accurate and in-depth the content is. AI models and search engines are getting steadily better at telling first-hand knowledge from reworded summaries – and they reward content that genuinely adds something new. This is nothing new: optimising for the user rather than the search engine has always been the best long-term SEO strategy. AI simply exposes the gap between genuine, thorough content and generic rubbish more quickly. Our view is clear: a page that ranks over the long term, in 2026 and beyond, is built on concrete expertise, original data or first-hand experience – not on repackaging what others have already written. Our job is to draw that knowledge out of the client with as little burden on them as possible. We do it through targeted interviews, context files for AI and, in some cases, RAG for specific needs. With well-structured, partly automated processes, people step in where they are needed most – for example to set the strategy and approve publication. That is how we bring first-hand expertise and our clients' unique insights to scale, without the client having to become a content producer.

On-page SEO for AEO and AI visibility

In AI-driven search, on-page structure matters even more. AI Overviews, ChatGPT and Perplexity extract answers directly from web pages – and do a better job when the content is well structured and answers questions directly.

• Semantic chunking – Write paragraphs that work as standalone answers. Each paragraph should make sense without the surrounding text
• Direct answer early – Answer the question in the first 1–2 sentences under the heading, not at the end of a long paragraph
• Questions and answers – Clear question-and-answer sections are easy to cite in AI answers. FAQPage schema is valid markup but no longer produces a rich result in Google; the value lies in the question-and-answer format of the text itself
• Question-based H2s – Headings phrased as questions match PAA results and the way AI looks for answers

On-page SEO in practice

A structured on-page process starts with a content analysis: which pages already rank, which competitors dominate and what is missing. The fixes are then prioritised by expected impact – adjusting title tags and rewriting H2s often work quickly, while new content takes longer to be indexed and to rank.

Want help carrying out an on-page review or building a content strategy from scratch? Get in touch and we will look at your opportunities free of charge.