The 4 types of SEO at a glance
The 4 types of SEO are on-page SEO, off-page SEO, technical SEO, and local SEO. On-page SEO covers the content and HTML elements you directly control on a page. Off-page SEO covers everything that happens away from your site, mostly backlinks and brand reputation. Technical SEO makes sure search engines can crawl, render, and index your pages quickly. Local SEO optimizes for searches with geographic intent, such as "plumber near me," by managing your Google Business Profile and map-pack presence.
Most teams treat these four as separate workstreams because each needs different skills and tools, but they reinforce each other. A page with excellent on-page content (type one) still loses if the site is too slow to index (a technical problem, type three) or has no links pointing to it (an off-page gap, type two). For a local business, all three feed into the fourth: a fast, well-written, well-linked page is what powers a strong local presence.
In 2026 a fifth type is rising fast, generative engine optimization (GEO), also called answer engine optimization (AEO). GEO optimizes content to be cited inside AI-generated answers from engines like ChatGPT, Perplexity, and Google AI Overviews. The four classic types are still the foundation, so we cover them first and then explain where GEO fits.
Type 1: On-page SEO (content and HTML you control)
On-page SEO is the practice of optimizing the content and HTML of an individual page so it matches what searchers want and what engines can parse. On-page SEO is the type you have the most direct control over, because every element lives inside your own pages rather than depending on other sites or infrastructure.
Concrete on-page tasks include:
- Setting a unique, descriptive title tag and a compelling meta description for every page.
- Using one clear
<h1>and a logical heading hierarchy (<h2>,<h3>) that maps to subtopics. - Adding descriptive
alttext to images and using internal links with meaningful anchor text. - Placing the answer to the page's main question high on the page, in plain language.
Example: a bakery's page targeting "gluten-free sourdough recipe" earns on-page wins by leading with the recipe summary, using a keyword-aligned title and H1, structuring the steps with subheadings, and linking internally to a related "how to feed a sourdough starter" post. None of that depends on another website, which is what makes on-page the most actionable place to start. Our SEO for beginners guide walks through these basics step by step.
Type 2: Off-page SEO (links and reputation)
Off-page SEO is the practice of building your site's authority and reputation through signals that originate outside your own pages. The dominant off-page signal is the backlink: a link from another website that acts as a vote of confidence, and the quality and relevance of the linking site matters far more than the raw count.
Concrete off-page tasks include:
- Digital PR and guest contributions on relevant, reputable publications in your industry.
- Building unlinked brand mentions into linked ones, and cleaning up toxic or spammy links.
- Getting listed in legitimate industry directories and being mentioned in roundups and podcasts.
Example: a B2B software company publishes an annual benchmark report; dozens of journalists and bloggers link to it as the source statistic, and each of those links passes authority to the domain. Off-page SEO is the slowest and least controllable of the four types because you cannot force another site to link to you, which is exactly why earned links carry so much weight with search engines.
Type 3: Technical SEO (crawl, render, index, speed)
Technical SEO is the practice of making sure search engines can crawl, render, index, and understand your site without obstacles. Technical SEO does not change what your content says; it makes sure that content is reachable and structured so engines can use it.
Concrete technical tasks include:
- Improving page speed and Core Web Vitals (loading, interactivity, layout stability).
- Ensuring mobile responsiveness, HTTPS, and crawlable JavaScript rendering.
- Adding valid JSON-LD structured data so engines understand entities like articles, products, and FAQs.
- Fixing duplicate content with canonical tags and resolving broken links and redirect chains.
Is technical SEO hard? It is more specialized than on-page work but most common issues are diagnosable with free tools and fixable without deep engineering. Example: an e-commerce site discovers via a crawl that 4,000 product pages return a slow time-to-first-byte and lack structured data; fixing the server response and adding Product JSON-LD lets those pages index faster and qualify for rich results. You can surface many technical issues in one pass by running a free SEO + GEO audit on any URL.
Type 4: Local SEO (maps, GBP, and 'near me')
Local SEO is the practice of optimizing a business to appear in geographically relevant searches, especially the map pack and "near me" queries. Local SEO matters most for businesses with a physical location or a defined service area, such as restaurants, clinics, law firms, and tradespeople.
Concrete local tasks include:
- Keeping your name, address, and phone number (NAP) consistent across the web.
- Earning and responding to customer reviews, which influence both ranking and conversion.
- Building local citations in directories and creating location-specific landing pages.
Example: a dentist in Austin completes their Google Business Profile, gathers 40 genuine reviews, and publishes an "Austin teeth whitening" page; they begin appearing in the local three-pack for nearby searchers. Local SEO sits on top of the other three types, since a fast, well-written, well-linked site is what makes a local listing competitive in the first place.
How the types fit together (and the emerging fifth)
The four types of SEO are layers of one system, not competing strategies. Technical SEO gets your pages indexable, on-page SEO makes them relevant, off-page SEO makes them authoritative, and local SEO points that authority at a geographic audience when relevant. The flow below shows a sensible order to work through them.
- Start with technical SEOMake sure engines can crawl, render, and index your pages, and that they load fast.
- Optimize on-page SEOMatch search intent with strong content, titles, headings, and internal links.
- Build off-page SEOEarn relevant backlinks and grow brand mentions to raise domain authority.
- Add local SEO if relevantComplete your Google Business Profile, keep NAP consistent, and gather reviews.
- Layer GEO/AEO on topAdd direct answers, Island-Test passages, and AI-crawler access to earn AI citations.
- Measure and iterateTrack rankings, links, local visibility, and AI citations, then fix the weakest layer.
The comparison table lines up all four (plus the emerging type) by focus and example tasks, so you can see at a glance which work belongs where.
| Type | Focus | Example tasks |
|---|---|---|
| On-page SEO | Content and HTML you control on each page | Intent-matched content, title tags, meta descriptions, heading structure, internal links |
| Off-page SEO | Authority and reputation earned away from your site | Editorial backlinks, digital PR, brand mentions, directory listings |
| Technical SEO | Crawlability, rendering, indexing, and speed | robots.txt, XML sitemap, Core Web Vitals, HTTPS, JSON-LD structured data |
| Local SEO | Geographic and 'near me' search visibility | Google Business Profile, NAP consistency, reviews, local landing pages |
| GEO / AEO (emerging) | Being cited inside AI-generated answers | Direct answers, Island-Test passages, AI-crawler access, llms.txt |
The emerging fifth type is generative engine optimization (GEO), sometimes called answer engine optimization (AEO). GEO optimizes content to be selected and quoted by AI engines rather than ranked in blue links. The moves include leading with a direct answer, writing passages that pass the Island Test, confirming AI crawlers are not blocked in robots.txt, and publishing an llms.txt file. For the full picture, see GEO vs SEO and our guide to generative engine optimization.
You do not pick one of the four types. You build technical and on-page foundations, layer off-page authority and local presence where they apply, then add a GEO finishing pass so AI engines cite you too.