Explore 40 types of SEO, including technical, on-page, off-page, local, international, news and AI search SEO techniques.
40 Types of SEO A Complete Guide to Search Engine Optimization Techniques in 2026 - 2027
By News National Editorial Team
Search Engine Optimisation (SEO) is an essential part of digital marketing. It helps websites improve their visibility in search engines, attract organic traffic, reach relevant audiences and build long-term online credibility.
As search technology continues to evolve, website owners and digital marketers need to understand different SEO techniques, from traditional keyword optimisation to technical SEO, international SEO and AI-powered search visibility.
There are several approaches to SEO, each serving a different purpose. Understanding these techniques can help businesses, bloggers, news publishers and online platforms develop an effective search strategy.
In this guide, we explore 40 important types of SEO and explain how they work.
What Is SEO?
Search Engine Optimisation is the process of improving a website and its content to increase its visibility in unpaid search engine results.
SEO involves several activities, including keyword research, content optimisation, website performance improvements, technical configuration, internal linking and building online authority.
The main objective is to make website content easier for search engines to discover and more useful for visitors.
40 Types of SEO You Should Know
1. On-Page SEO
On-Page SEO involves optimising individual website pages, including titles, headings, meta descriptions, content, images and internal links. It helps search engines understand the subject of a page.
2. Technical SEO
Technical SEO focuses on website infrastructure, including crawling, indexing, site speed, mobile usability, HTTPS and structured data. It helps search engines access and understand website content.
3. Off-Page SEO
Off-Page SEO includes activities outside a website that contribute to its reputation and authority. Quality backlinks, brand mentions, digital PR and industry references are common examples.
4. Local SEO
Local SEO improves visibility in location-based searches. It is especially useful for businesses, shops, restaurants and service providers targeting customers in specific geographical areas.
5. International SEO
International SEO helps websites reach audiences in different countries and languages. It may involve regional content, appropriate URL structures and hreflang implementation.
6. E-commerce SEO
E-commerce SEO improves the visibility of online shopping websites. Product descriptions, category pages, product images, structured data and website navigation are important elements.
7. Mobile SEO
Mobile SEO focuses on improving website performance and usability on smartphones and tablets. Responsive design and mobile-friendly navigation are important considerations.
8. Image SEO
Image SEO involves optimising image filenames, alternative text, file sizes, formats and contextual placement. It can improve image discoverability and page accessibility.
9. Video SEO
Video SEO improves the discoverability of video content through descriptive titles, relevant descriptions, transcripts, thumbnails and video structured data.
10. Content SEO
Content SEO focuses on creating valuable, original and relevant content that answers users' questions. Quality, accuracy, usefulness and appropriate keyword targeting are essential.
11. XML Sitemap SEO
An XML sitemap provides search engines with information about important website URLs. It can help search engines discover pages, particularly on large or frequently updated websites.
12. Robots.txt SEO
Robots.txt provides crawler instructions about which website paths should or should not be crawled. It must be configured carefully because it does not guarantee that a page will remain out of search results.
13. Schema Markup SEO
Schema markup uses structured data to help search engines understand information on a webpage. Examples include Article, NewsArticle, Product, Organisation and BreadcrumbList.
14. Core Web Vitals SEO
Core Web Vitals measure important aspects of user experience, including loading performance, responsiveness and visual stability. They include Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift.
15. Website Speed SEO
Website speed optimisation reduces unnecessary loading delays. Image compression, caching, efficient code and suitable hosting can improve performance.
16. URL Structure SEO
SEO-friendly URLs are descriptive, readable and organised logically. Short URLs that clearly communicate a page's subject can improve navigation and usability.
17. Canonical SEO
Canonical tags indicate the preferred URL when multiple pages contain identical or substantially similar content. They help consolidate duplicate URL signals.
18. Crawlability SEO
Crawlability refers to how easily search engine crawlers can access website pages. Internal links, website structure, server availability and crawler directives can affect it.
19. Indexability SEO
Indexability concerns whether a webpage can be included in a search engine's index. Noindex directives, canonical tags, access restrictions and technical errors can influence indexing.
20. Website Architecture SEO
Website architecture organises pages into logical categories and hierarchies. Clear navigation and internal linking help users and search engines discover important content.
21. Keyword Research SEO
Keyword research identifies the search terms people use when looking for information, products or services. It helps publishers understand audience interests and plan relevant content.
22. Long-Tail Keyword SEO
Long-tail keywords are specific search phrases that often express a clear information need. For example, "how to improve website SEO for a news portal" is more specific than "SEO".
23. Semantic SEO
Semantic SEO focuses on topics, relationships, context and related concepts rather than relying exclusively on exact-match keywords. Comprehensive and logically structured content supports this approach.
24. Entity-Based SEO
Entity-based SEO focuses on clearly identifying people, organisations, locations, products and other identifiable subjects. Consistent information and appropriate structured data can help search engines understand entities.
25. Search Intent SEO
Search intent optimisation involves understanding what users expect from a search query. Common intent categories include informational, navigational, commercial investigation and transactional.
26. Programmatic SEO
Programmatic SEO uses structured datasets and templates to create large numbers of targeted pages. It requires meaningful, unique value on each page to avoid producing thin or repetitive content.
27. News SEO
News SEO focuses on improving the discoverability of news articles. Accurate headlines, original reporting, publication dates, clear sourcing, appropriate article structured data and fast page delivery are important.
28. Evergreen SEO
Evergreen SEO focuses on content that remains useful over an extended period. Educational guides, tutorials, definitions and reference articles are common examples.
29. Featured Snippet SEO
Featured snippet optimisation involves presenting clear answers to common questions using concise explanations, descriptive headings, lists and tables. Search engines independently decide whether to display featured snippets.
30. Voice Search SEO
Voice search optimisation focuses on natural-language queries and conversational questions. Clear answers and well-organised information can make content easier to understand.
31. Link Building SEO
Link building involves earning relevant backlinks from other websites. Editorial references, useful resources, original research and industry partnerships can support a natural backlink profile.
32. Digital PR SEO
Digital PR combines public relations with online visibility strategies. Original research, expert commentary, newsworthy announcements and useful data can attract media coverage and editorial links.
33. E-E-A-T SEO
E-E-A-T stands for Experience, Expertise, Authoritativeness and Trustworthiness. These concepts are particularly relevant to content where accuracy and reliability matter. They are part of Google's quality assessment framework, not a single direct ranking factor.
34. Reputation SEO
Reputation SEO involves maintaining accurate and trustworthy information about a brand across the internet. Consistent business information, credible mentions and responsible responses to feedback can support brand credibility.
35. Competitor SEO
Competitor SEO involves analysing competing websites, their content strategies, keyword coverage, backlinks and search visibility. This research can reveal content gaps and opportunities.
36. International Hreflang SEO
Hreflang annotations help search engines understand the intended language and regional audience of alternative webpage versions. Correct implementation can help serve the appropriate version in search results.
37. Google Discover SEO
Google Discover SEO focuses on creating engaging, useful and timely content that may be recommended to users through Google Discover. High-quality images, informative headlines and original reporting can support eligibility, but visibility is not guaranteed.
38. Google News SEO
Google News SEO involves preparing a news website and its articles for discovery through Google's news experiences. Original journalism, transparency, clear publication information and accessible article pages are important.
39. AI Search SEO
AI search optimisation focuses on making information accurate, accessible, well-structured and useful for AI-powered search experiences. Clear explanations, credible references and original information can improve content usefulness. There is no guaranteed formula for appearing in AI-generated answers.
40. Conversion Rate Optimisation (CRO)
Conversion Rate Optimisation focuses on increasing the proportion of website visitors who complete a desired action, such as subscribing, registering or contacting a business. CRO complements SEO by helping websites gain more value from existing traffic.
Why Are Different Types of SEO Important?
Each SEO category addresses a different part of website performance.
Technical SEO helps search engines access website content. On-page and content SEO improve relevance and usefulness. Off-page SEO supports online authority, while local and international SEO help websites reach the right geographical audiences.
For publishers, News SEO, Google News visibility and Google Discover optimisation are particularly relevant. For online businesses, local SEO, e-commerce SEO and conversion optimisation can be valuable.
A successful SEO strategy combines appropriate techniques rather than relying on a single method.
Best SEO Practices for News Websites
News publishers need to balance search visibility with journalistic accuracy and editorial standards.
Important practices include:
Publish original and independently verified news articles.
Use accurate, descriptive and informative headlines.
Include clear publication and modification dates.
Provide transparent editorial and contact information.
Add appropriate NewsArticle structured data.
Optimise images without compromising quality.
Maintain an organised XML sitemap.
Monitor indexing and search performance.
Use relevant internal links between related stories.
Avoid duplicate articles, keyword stuffing and misleading headlines.
Clearly identify sources and distinguish confirmed facts from claims.
Regularly update important evergreen articles when information changes.
Essential SEO Tools
Several tools can help website owners monitor and improve SEO performance.
Google Search Console – Monitors search performance, indexing and website issues.
Google Analytics 4 – Measures website traffic and user engagement.
Google Trends – Identifies changing search interest.
Google PageSpeed Insights – Analyses website performance.
Bing Webmaster Tools – Provides search performance and technical information for Bing.
Screaming Frog SEO Spider – Helps identify technical SEO problems.
Ahrefs – Supports backlink and keyword research.
Semrush – Provides competitor and keyword analysis.
Google Rich Results Test – Checks eligibility for supported rich results.
Schema Markup Validator – Validates structured data markup.
Common SEO Mistakes to Avoid
Even websites that publish regularly can struggle with search visibility if they overlook important SEO practices.
Common mistakes include:
Publishing copied or minimally rewritten articles.
Targeting irrelevant keywords.
Creating misleading headlines.
Ignoring mobile performance.
Allowing important pages to become inaccessible.
Publishing multiple pages targeting the same search intent without a clear purpose.
Building low-quality or manipulative backlinks.
Ignoring website security.
Failing to update outdated information.
Expecting immediate rankings from SEO activities.
SEO is a long-term process. Results depend on competition, content quality, website condition, search demand and many other factors.
Conclusion
SEO is not a single technique but a combination of strategies that help websites become more discoverable, useful and accessible.
Understanding these 40 types of SEO gives website owners, digital marketers, publishers and businesses a foundation for developing effective search strategies.
The best approach is to focus on technical health, original content, relevant keywords, trustworthy information and a positive user experience. By consistently monitoring performance and improving website quality, publishers and businesses can build sustainable organic search visibility.
By News National Editorial Team