Starting SEO can feel confusing when the language seems unfamiliar. A simple SEO glossary is often the best place to begin because it turns complex ideas into clear explanations you can understand at your own pace. When you have SEO terms explained in plain English, the wider picture becomes much easier to follow.
To make learning smoother, this SEO dictionary brings together the most common terms you will meet as you build your skills. Each definition is written with beginners in mind, and while the list will grow over time, it offers a steady starting point for anyone wanting to understand the essentials.
Summary
An SEO glossary is useful when you want to know what people mean without getting stuck in jargon. A lot of SEO language is just shorthand for simple ideas, but it can still slow you down if you are not sure what a term points to in the real world. This A to Z keeps definitions clear and quick to scan, so you can look something up, understand it, and move on.
In this article, each term is explained in a way that connects to what you actually see in your tools and on your site. The aim is to help you make clearer decisions, spot what matters, and ignore what is mostly noise. It is there for quick checks while you work, not for theory.
Skip To A Letter
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
A
SEO terms beginning with A often cover core concepts like algorithms, analytics, and authority. These ideas form the foundation of how search engines evaluate and rank content.
AEO (ANSWER ENGINE OPTIMISATION)
AEO focuses on structuring content so it can be directly used by search engines and AI tools to answer user questions. Instead of just ranking for keywords, the goal is to provide clear, concise, and authoritative answers that can be extracted into featured snippets, voice search responses, or AI-generated summaries. This involves using structured content, direct answers, and strong topical clarity.
AIO (AI OPTIMISATION)
AIO refers to the process of optimising your content and website experience specifically for AI systems, like chat-based assistants and voice search. It focuses on delivering clear, structured, and accurate information that AI tools can easily interpret and use in their results.
ADWORDS (NOW GOOGLE ADS)
AdWords (now called Google Ads) is a paid advertising platform where businesses bid on keywords. This helps their ads appear at the top of search results, but it’s different from organic SEO, which is unpaid.
ALGORITHM
An algorithm is a set of rules that search engines use to rank web pages. Google uses its algorithm to decide which pages appear at the top of the search results. Understanding how algorithms work helps you optimise your site.
ALGORITHM UPDATE
Search engines regularly update their algorithms to improve the quality of search results. When Google makes an update, it can affect your website’s ranking, so it’s important to stay informed about the latest changes.
ALT TEXT
Alt text is a description of an image on your site. It helps search engines “see” your images and can improve your site’s accessibility. For example, if you have an image of a dog, your alt text could be “brown Labrador running in the park.”
ANALYTICS
Analytics involves tracking and analysing website data to understand user behaviour. Google Analytics is a popular tool that shows how many visitors your site gets, where they come from, and what they do on your site.
ANALYTICS DASHBOARD
An analytics dashboard is the area in tools like Google Analytics where you view charts, graphs, and data about your visitors. It gives you a quick overview of how your site is performing and helps you understand what users do when they arrive.
ANCHOR TEXT
Anchor text is the clickable text used in a hyperlink. It provides context about the linked page and helps search engines understand what the destination page is about. Descriptive and relevant anchor text improves both usability and SEO.
API (APPLICATION PROGRAMMING INTERFACE)
An API allows different pieces of software to communicate. Some SEO tools use APIs to pull data directly from platforms like Google Analytics or Search Console, helping you view everything in one place.
AUDIT
An SEO audit is a full analysis of your website’s performance. It checks for issues that might be hurting your ranking, such as broken links, missing meta tags, or slow page speed.
AUTHORITY
Authority is how trustworthy and reputable your site is in the eyes of search engines. The more quality backlinks you have and the better your content, the more authority your site will have.
B
Terms under B tend to focus on backlinks, branding, and user behaviour signals. These areas play a key role in building trust and improving visibility.
BACKLINK PROFILE AUDIT
A backlink profile audit reviews the quality and source of all sites linking to yours. It helps you spot harmful links, lost links, or areas where you may need to build stronger authority.
BACKLINKS
Backlinks are links from other websites pointing to your site, acting as signals of trust and authority. Search engines use them to assess how credible and relevant your content is. High-quality backlinks from reputable sites carry more value than large volumes of low-quality links.
BLACK HAT SEO
Black Hat SEO uses tactics that break search engine rules. Although they may give short term results, they can lead to penalties.
BLOGGING
Blogging is writing content regularly on your website. A well-written blog with valuable information can drive traffic, improve your SEO, and showcase your expertise.
BOUNCE RATE
Bounce rate is the percentage of visitors who leave your site after viewing only one page. A high bounce rate may indicate that your content isn’t engaging or relevant.
BOTS AKA CRAWLERS
Bots, also known as crawlers, are software that search engines use to scan your website. They index your pages and gather information to decide where your site should rank in search results.
BRAND MENTIONS
Brand mentions are instances where your business is talked about online. Even if there’s no direct link to your site, brand mentions can improve your visibility and authority in search engines.
BRANDED SEARCH
Branded search refers to queries that include your business name. A rise in branded searches usually signals growing awareness and trust.
BREADCRUMBS
Breadcrumbs are navigational aids that show users their path through your site. They usually appear at the top of a page, like “Home > Blog > SEO Tips,” making it easier for visitors to navigate and for search engines to understand your site structure.
BROKEN LINKS
A broken link is a hyperlink that no longer works. This could be because the linked page has been removed or the URL is incorrect. Broken links can hurt user experience and SEO, so it’s important to fix them.
C
C-related SEO terms often centre around crawling, content, and site structure. Understanding these helps ensure your pages are discoverable and properly indexed.
CANONICAL URL
A canonical URL tells search engines which version of a page should be treated as the main one when similar or duplicate pages exist. This helps consolidate ranking signals and prevents issues where multiple URLs compete against each other. For example, if the same content appears under different URLs, the canonical tag ensures only one is prioritised in search results.
CHATGPT
ChatGPT is an AI model developed by OpenAI. It’s capable of answering queries in natural language, often pulling from structured web content. As tools like ChatGPT are used more for search, structuring content clearly and with factual accuracy is essential for visibility.
CITATIONS
Citations are mentions of your business’s name, address, and phone number (NAP) on other websites. They are important for local SEO, helping to verify your business’s legitimacy and boost local rankings.
CLICK-THROUGH-RATE (CTR)
CTR is the percentage of users who click on your link in search results. A higher CTR means more people are finding your listing attractive, which can help improve your rankings.
COMPETITOR ANALYSIS
Competitor analysis is researching your competitors to understand their SEO strategy. This helps you identify gaps, find keyword opportunities, and improve your own site.
CONTENT
Content is the information you provide on your site, including text, images, videos, and infographics. High-quality, valuable content is essential for SEO, as it helps attract and engage visitors.
CONTENT MANAGMENT SYSTEM (CMS)
A CMS is software that lets you create, edit, and publish content on your website. WordPress is a popular CMS for SEO because it’s user-friendly and has many plugins to help optimise your content.
CONTENT PRUNING
Content pruning involves reviewing and improving or removing low-performing pages from your site. This helps maintain overall quality, improves crawl efficiency, and ensures search engines focus on your most valuable content.
CONVERSION
A conversion is when a visitor completes a desired action on your site, like making a purchase or signing up for a newsletter. The goal of SEO is not just to drive traffic, but to increase conversions.
CORE WEB VITALS (WEB VITALS)
Core Web Vitals are metrics used by Google to measure user experience, focusing on loading speed, interactivity, and visual stability. Improving these metrics can enhance both rankings and user satisfaction.
CRAWL BUDGET
Crawl budget is the number of pages a search engine is willing to crawl on your site within a given timeframe. Large or poorly structured sites can waste crawl budget on low-value pages, which may delay indexing of more important content.
CRAWLING
Crawling is the process by which search engines send bots to explore your site. These bots gather data about your pages, which are then added to the search engine’s index.
CRAWLABILITY
Crawlability refers to how easily search engine bots can access and navigate your site. A well-structured site with clear links and no technical barriers ensures important pages are discovered and indexed.
D
SEO terms starting with D commonly relate to domains, data, and technical setup. These elements influence how your site is interpreted and ranked by search engines.
DATA LAYER
A data layer is information stored on your site that helps tools like Google Tag Manager track events more accurately. It supports improved measurement and smoother reporting.
DEEP LINKING
Deep linking refers to linking to specific pages within your site, rather than just your homepage. This helps spread link equity and improves the user experience by directing them to relevant content.
DESCRIPTION
A meta description is a short summary of a page’s content that appears in search results. A well-written meta description can entice users to click on your link, improving your CTR.
DIRECT TRAFFIC
Direct traffic refers to visitors who come to your site by typing your URL directly into their browser, rather than through a search engine or another site.
DISAVOW LINKS
Disavowing links is a way to tell search engines to ignore certain backlinks to your site. This is useful if you have low-quality or spammy links pointing to your site that could harm your SEO.
DOMAIN AUTHORITY
Domain Authority is a score from 1 to 100 that predicts how well your site will rank in search engines. The higher your DA, the more likely you are to rank higher.
DOMAIN MIGRATION
Domain migration is when you move your site from one domain to another. It requires careful redirects and checks to protect your SEO.
DOMAIN NAME
Your domain name is your website’s address on the internet (e.g., www.example.com). A memorable and relevant domain name can help your site’s branding and SEO.
DOFOLLOW LINKS
A DoFollow link is a backlink that allows search engines to pass on “link juice” or authority from one site to another. These links are valuable for improving your SEO.
DUPLICATE CONTENT
Duplicate content refers to identical or very similar content appearing across multiple URLs. This can dilute ranking signals and make it harder for search engines to determine which page should rank.
E
Under E, you’ll find terms linked to experience, engagement, and entity-based SEO. These concepts are increasingly important in modern search.
E-E-A-T (EXPERIENCE, EXPERTISE, AUTH0RITY, TRUST)
E-E-A-T is a concept used by search engines to assess the quality of content. Pages with high E-E-A-T are more likely to rank well. To improve E-E-A-T, make sure your content is well-researched, trustworthy, and written by an expert, with first-hand experience.
EDITORIAL LINKS
Editorial links are backlinks that you earn naturally when another site finds your content valuable and links to it. These are some of the most powerful types of backlinks for SEO.
ENCRYPTION (HTTPS)
HTTPS is a secure version of HTTP, the protocol for sending data over the web. Having HTTPS is a ranking factor for SEO, as search engines prefer secure websites.
ENGAGEMENT RATE
Engagement rate measures how users interact with your content, including time on page and interactions. Higher engagement signals that your content is useful and relevant.
ENTITY SEO
Entity SEO helps search engines understand the relationships between topics, brands, and concepts. It moves beyond keywords and focuses on building clear, structured meaning within your content.
ERROR 404
An Error 404 is a page that cannot be found on your site, often because a page has been deleted or moved. Having many 404 errors can harm user experience and your SEO, so it’s important to fix them.
EVERGREEN CONTENT
Evergreen content is content that remains relevant and valuable over time, like “How to Tie a Tie” or “SEO Tips for Beginners.” This type of content can drive traffic to your site for years.
EXACT DOMAIN MATCH (EDM)
An Exact Match Domain is a domain name that exactly matches a targeted keyword, like “cheapflights.com.” EMDs used to have an SEO advantage, but today, search engines focus more on content quality than domain names.
EXTERNAL LINKS
External links are hyperlinks on your site that point to another website. Linking to high-quality, relevant content can improve the user experience and your site’s credibility.
F
F terms often focus on performance factors such as speed, structure, and visibility features. These can directly impact both rankings and user experience.
FAVICON
A favicon is the small icon that appears next to your website’s name in a browser tab. Having a recognisable favicon can improve user experience and branding.
FEATURED SNIPPET
A featured snippet is a highlighted result that appears at the top of search results, providing a direct answer to a query. Securing a featured snippet can significantly increase visibility and traffic, as it often appears above standard listings.
FILTERS
Search filters are options provided by search engines to narrow down search results. For example, users can filter results by time, location, or content type. Understanding filters can help you optimise content to appear in specific filtered searches.
FIRST INPUT DELAY (FID)
FID measures how quickly your site responds the first time a user interacts with it. Faster response times improve user experience and support stronger SEO performance.
FLAT SITE STRUCTURE
A flat site structure keeps pages only a few clicks from the homepage. This makes crawling easier and helps users find information quickly.
FOLLOW LINKS
Follow links are hyperlinks that allow search engines to pass on authority from one site to another. If a link is not marked as “nofollow,” it is considered a follow link and can positively impact your SEO.
FOOTER LINKS
Footer links are hyperlinks at the bottom of your web pages. While they can be useful for navigation, they shouldn’t be overused for SEO purposes, as search engines might view them as spammy.
FOOTER SEO
Footer SEO involves optimising the footer section of your site for better search visibility. This includes adding relevant links, contact information, and keywords without overloading it with spammy content.
FREQUENCY
Frequency relates to how often you publish content or make updates to your site. Consistent updates can signal to search engines that your site is active and relevant.
FRESHNESS FACTOR
The freshness factor refers to how recently content has been published or updated. Search engines may prioritise fresher content for certain queries, like news or trends, so it’s important to keep your site updated.
G
SEO terms beginning with G typically relate to Google’s tools, systems, and evolving search technologies. These shape how content is discovered and displayed.
GEO (GENERATIVE ENGINE OPTIMISATION)
Generative Engine Optimisation. It’s a newer branch of SEO focused on tailoring content for AI-powered search tools like ChatGPT, Perplexity, and Google’s AI Overviews. Unlike traditional search, generative engines summarise or answer queries directly, so GEO involves structuring your content clearly, factually, and semantically to increase the chances of being sourced or cited in AI-generated responses.
GEO-TARGETING
Geo-targeting is the practice of delivering different content to users based on their geographic location. This is especially useful for local businesses wanting to attract nearby customers.
GEMINI
Gemini is Google’s family of large language models (LLMs) that power various AI search and assistant experiences. Understanding how Gemini interprets content can help you prepare your site for AI-driven platforms and tools where traditional SEO overlaps with AI expectations.
GOOGLE ALGORITHM UPDATES
Google frequently updates its search algorithm to improve search results. Some updates, like Panda or Penguin, have significantly impacted SEO practices. Staying informed about these updates can help you adjust your strategy.
GOOGLE ANALYTICS
Google Analytics is a free tool that tracks and reports your website traffic. It provides insights into visitor behaviour, demographics, and how they found your site, all of which are vital for SEO.
GOOGLE BUSINESS PROFILE (FORMALLY GOOGLE MY BUSINESS)
Google Business Profile is a tool that helps you manage your business’s presence on Google Maps and in local search results. Setting up a GBP profile is crucial for local SEO and helps potential customers find your business more easily.
GOOGLE SEARCH CONSOLE
Google Search Console is a free tool that helps you monitor and maintain your website’s presence in Google Search results. It provides data on your site’s search performance, errors, and indexing status.
GOOGLE TAG MANAGER
Google Tag Manager helps you add tracking code snippets to your site without editing the main code directly. It keeps your tracking organised and reduces the need for developer support
GOOGLEBOT
Googlebot is Google’s web crawler that scans and indexes your site. Ensuring that Googlebot can easily access and understand your pages is crucial for effective SEO.
GREY HAT SEO
Grey Hat SEO includes practices that are technically within search engine guidelines but might be questionable or risky, such as overly optimising content for keywords. Unlike White Hat SEO, it carries some risk of penalties.
GUEST POSTING
Guest posting is when you write content for another website in your industry. It’s a great way to build backlinks, increase your online presence, and reach a new audience.
H
H terms are usually connected to structure and accessibility, including headings and HTML. These help search engines understand your content more clearly.
HEADER TAGS
Header tags include H1, H2, H3, and so on. They help structure your text and guide search engines through your content.
HEADINGS OR HEADING TAGS (H1, H2, H3, etc.)
Headings help structure your content and make it easier for both users and search engines to understand. The H1 tag is your main title, while H2 and H3 tags are used for subheadings and sections.
HEADLINE
The headline is the main title of a page or post. A catchy and keyword-optimised headline can attract clicks and improve your SEO.
HEATMAPS
Heatmaps show where users click or hover on your page. They help you understand how visitors interact with your content and where improvements are needed.
HIDDEN TEXT
Hidden text is any text on your website that is not visible to users but is intended to be seen by search engines. This is against Google’s guidelines and can lead to penalties.
HTML (HYPERTEXT MARKUP LANGUAGE)
HTML is the code used to structure and display content on your website. Knowing basic HTML helps you add meta tags, headings, and other elements that can improve your SEO.
HTML SITEMAP
An HTML sitemap is a page on your site that lists all the important pages. It helps users navigate your site and search engines understand its structure.
HTTPS
HTTPS is the secure version of HTTP and stands for Hypertext Transfer Protocol Secure. Having HTTPS means your site is secure, which is a ranking factor for Google and provides a better user experience.
HUB PAGES
Hub pages are central pages on your website that link to related sub-pages or content. They help organise your site and distribute link authority across multiple pages.
I
Under I, many terms relate to indexing, information architecture, and internal linking. These are essential for helping search engines navigate your site.
IMAGE OPTIMISATION
Image optimisation involves compressing images for faster load times, adding descriptive file names, and using alt text. Optimised images improve page speed and can help with image search rankings.
IMPRESSIONS
An impression is when your site’s link appears in a search result, even if it is not clicked. Monitoring impressions helps you understand how often your site is being seen.
INDEX COVERAGE
Index coverage is a report in Google Search Console that shows which of your pages have been indexed and if any errors are preventing them from being indexed.
INDEXING
Indexing is the process of storing your website’s pages in a search engine’s database so they can appear in search results. If a page isn’t indexed, it won’t rank regardless of its quality. Proper indexing depends on crawlability, internal linking, and clear site structure.
INBOUND LINKS
Inbound links are another term for backlinks – links from other websites that point to yours. They help improve your site’s authority and SEO.
INBOUND MARKETING
Inbound marketing is the practice of attracting visitors through helpful content rather than paid adverts. SEO sits at the heart of this approach.
INFORMATION ARCHITECTURE
Information architecture describes how your site is structured, grouped, and organised. A clear layout helps both users and search engines move through your content with ease.
INFOGRAPHICS
Infographics are visual representations of information or data. High-quality infographics are often shared widely, which can lead to more backlinks and traffic to your site.
INTERNAL LINKS
Internal links connect pages within your own website. They help users navigate your content and allow search engines to understand how pages relate to each other. Strong internal linking improves crawlability and distributes authority across your site.
J
J-related SEO terms often involve JavaScript and technical rendering. These can affect how content is processed and whether it appears in search results.
JAVASCRIPT
JavaScript is a programming language used to make web pages interactive. While JavaScript is important for user experience, search engines sometimes struggle to crawl it, so it’s crucial to ensure your content is accessible.
JAVASCRIPT FRAMEWORK
JavaScript frameworks like Angular, React, and Vue help build complex web applications. However, it’s important to ensure these frameworks are SEO-friendly by making sure they allow for proper crawling and indexing.
JAVASCRIPT RENDERING
JavaScript rendering refers to how search engines process content loaded by JavaScript. If rendering fails, the content may not be indexed correctly.
JAVASCRIPT SEO
JavaScript SEO is the practice of making sure your JavaScript-based content is crawlable and indexable by search engines. This can involve using techniques like server-side rendering or dynamic rendering.
JSON-LD
JSON-LD is a format for adding structured data to your site, helping search engines understand your content better. It can improve how your site appears in search results with rich snippets like star ratings.
JUICE (LINK JUICE)
Link juice is a slang term for the authority or value passed from one page to another through a hyperlink. Pages with lots of high-quality link juice are likely to rank higher in search results.
JUMP LINKS
Jump links are links that take users to a specific section on the same page. They are often used for long-form content or FAQs and help improve user experience.
K
Terms starting with K are mostly centred around keywords and how they are used. This includes research, targeting, and avoiding common optimisation mistakes.
KEYWORD CANNIBALISATION
Keyword cannibalisation occurs when multiple pages on your site target the same keyword, causing them to compete against each other. This can weaken rankings and confuse search engines about which page to prioritise.
KEYWORD DENSITY
Keyword density is the number of times a keyword appears on a page compared to the total word count. While it’s important to include keywords, overusing them (known as “keyword stuffing”) can harm your SEO.
KEYWORD DIFFICULTY
Keyword difficulty is a measure of how hard it will be to rank for a specific keyword. Generally, keywords with high search volume have more competition, making it harder to rank for them.
KEYWORD INTENT
Keyword intent refers to the purpose behind a search term. There are generally three types: informational (looking for information), navigational (looking for a specific site), and transactional (looking to make a purchase).
KEYWORD RESEARCH
Keyword research is the process of identifying search terms your audience is using. It helps guide content creation by targeting queries with the right balance of search volume, relevance, and competition.
KEYWORD STUFFING
Keyword stuffing is the practice of overloading a web page with keywords in an attempt to rank higher. This is considered a black hat SEO technique and can lead to penalties from search engines.
KEYWORDS
Keywords are words or phrases that users type into search engines. They are the foundation of SEO, as they help you understand what people are searching for and optimise your content to match those searches.
KNOWLEDGE GRAPH
The Knowledge Graph is a feature in Google that provides quick answers to queries. For example, searching “weather in London” will show the forecast without needing to click on a website. Appearing in the Knowledge Graph can improve your site’s visibility.
L
L terms often relate to links, both internal and external, and how authority flows across your site. They are fundamental to SEO performance.
LANDING PAGE
A landing page is a web page designed to capture leads or drive traffic to take a specific action, such as signing up for a newsletter. It is often the first page visitors see and should be optimised for conversions and keywords.
LATENT SEMANTIC INDEXING
LSI keywords are words and phrases related to your main keyword. Including LSI keywords in your content helps search engines understand the topic of your page better and improves your chances of ranking.
LINK BUILDING
Link building is the practice of getting other websites to link back to yours. High-quality backlinks from reputable sites can improve your site’s authority and search engine ranking.
LINK EQUITY
Link equity, also known as “link juice,” is the value or authority passed from one page to another through a hyperlink. High-quality links from reputable sites pass more equity than low-quality or spammy links.
LINK PROFILE
A link profile is the overall collection of all the backlinks that point to your website. A strong link profile consists of a variety of high-quality, relevant, and natural links.
LINK RECLAMATION
Link reclamation is the process of finding lost or broken backlinks pointing to your site and recovering them. This helps maintain authority.
LOCAL SEO
Local SEO focuses on improving visibility in location-based searches. It includes optimising your Google Business Profile, local keywords, and citations to attract nearby customers.
LOG FILE
A log file contains data showing when bots visit your site and what they crawl. Reviewing this information helps you spot problems with indexing.
LOG FILE ANALYSIS
Log file analysis involves examining server log files to understand how search engine bots crawl your site. This can help you identify crawling issues and improve how search engines index your content.
LONG-TAIL KEYWORDS
Long-tail keywords are more specific, longer phrases that usually have lower search volume but less competition. For example, “best running shoes for flat feet” is a long-tail keyword. They are often easier to rank for than short, generic keywords.
LLM (LARGE LANGUAGE MODEL)
LLMs are AI systems trained to understand and generate human language. They’re now used in search (like Google’s Search Generative Experience or ChatGPT). Optimising content for LLMs means writing clear, fact-based content that answers specific queries efficiently.
LLMO (LLM OPTIMISATION)
LLMO is the practice of shaping your content specifically for large language models. This includes using consistent language, strong internal linking, schema markup, and well-structured pages so AI systems can easily understand and cite your content in answers.
M
SEO terms under M usually focus on metadata, mobile optimisation, and measurement. These areas help refine how your site appears and performs in search.
MANUAL ACTION
A manual action is a penalty applied by a human reviewer at Google when your site breaks guidelines.
MANUAL PENALTY
A manual penalty is when a search engine manually reviews your site and finds that it violates their guidelines. Manual penalties can significantly affect your rankings and traffic, so it’s important to follow best practices.
META DESCRIPTION
A meta description is a short summary of a web page that appears below the title in search results. It should include relevant keywords and entice users to click on your link.
META TAGS
Meta tags are snippets of code in the HTML of your website that provide information about a page to search engines. The most important meta tags for SEO are the title tag and meta description.
META TITLE (TITLE TAG)
The meta title is the main title of a web page that appears in search results. It is a key ranking factor, so it’s important to include your main keyword and keep it under 60 characters.
MICRODATA
Microdata is a type of structured data that helps search engines understand the content on your page. It can enhance how your site appears in search results by adding elements like star ratings or review snippets.
MOBILE OPTIMISATION
Mobile optimisation is making sure your website works well on mobile devices. With the majority of searches happening on mobile, having a mobile-friendly site is essential for good SEO.
MOBILE-FIRST INDEXING
Mobile-first indexing is how Google primarily uses the mobile version of your site for indexing and ranking. This means that if your mobile site is not optimised, it could negatively affect your search engine ranking.
As of Summer 2024, Google has stopped indexing websites that aren’t optimised for mobile
MULTILINGUAL SEO
Multilingual SEO is the practice of optimising your site for different languages. It involves correct hreflang tags, targeted content, and region specific keywords.
N
N-related terms often cover navigation, indexing controls, and link attributes. These help manage how search engines and users interact with your site.
NAP (NAME, ADDRESS, PHONE NUMBER)
NAP stands for Name, Address, and Phone Number. Consistency of your NAP information across all online directories and listings is crucial for local SEO. This use to be really important but Google is a lot smarter now, and the exact matching consistency is more of good practice than a necessity.
NATURAL LINKS
Natural links are backlinks that are earned organically, without you having to ask for them. They are the most valuable type of links for SEO because they show search engines that your content is high quality and worth linking to.
NAVIGATION MENU
The navigation menu is the list of links that helps users find pages on your website. A well-organised menu improves user experience and helps search engines understand the structure of your site.
NEGATIVE SEO
Negative SEO involves attempts by external sources to harm your site, such as sending spammy backlinks. While uncommon, tools help you monitor suspicious patterns.
NGRAM
An Ngram is a sequence of words used together in a search query, like “best SEO practices.” Understanding common Ngrams can help you optimise your content for phrases people are searching for.
NOFOLLOW LINKS
Nofollow links are links with a “nofollow” tag, which tells search engines not to pass link equity to the linked site. They are often used for paid links, user-generated content, or untrusted sites.
NOINDEX TAG
A noindex tag is a piece of code that tells search engines not to index a specific page. You might use this for pages that you don’t want to appear in search results, like thank-you pages or admin pages.
NATURAL SEARCH RESULTS (ORGANIC LISTINGS)
Natural search results are the organic listings that appear in search engines based on their ranking algorithms. These are not paid advertisements but are ranked based on relevance, content quality, and other SEO factors.
O
O terms typically involve optimisation strategies and organic search performance. These concepts are central to improving rankings over time.
OFF-PAGE SEO
Off-page SEO involves all the activities you do outside of your website to improve its rankings. This includes link building, social media marketing, and guest blogging.
ON-PAGE SEO
On-page SEO refers to optimising individual pages on your site to rank higher in search results. This includes optimising your content, title tags, meta descriptions, and URLs.
OPEN GRAPH TAGS
Open Graph tags are a type of meta tag used by social media platforms like Facebook to display rich content when your page is shared. Using Open Graph tags can improve the appearance of your page on social media and encourage more clicks.
OPEN RATE
Open rate measures how many users open your emails. While not a direct SEO factor, strong email engagement can support site traffic and brand awareness.
OPTIMISATION
Optimisation is the process of improving your website’s performance to rank better in search engines. This can include improving content quality, speeding up your site, and building backlinks.
ORGANIC SEARCH
Organic search is when users find your site through unpaid search results on a search engine like Google. It’s different from paid search, which involves advertisements at the top of search results.
ORGANIC TRAFFIC
Organic traffic is the visitors who come to your site from unpaid search results. The main goal of SEO is to increase organic traffic by ranking higher for relevant keywords.
ORPHAN PAGES
Orphan pages are website pages that are not linked to from any other page or section from that site. Generally the only way to access these pages is by knowing the direct URL, as such these pages get little traffic and will be rarely indexed by the search engines.
OUTBOUND LINKS
Outbound links are links on your site that point to external websites. Linking to high-quality, relevant sources can improve your site’s credibility and user experience.
OUTREACH
Outreach is the process of reaching out to other websites or influencers to promote your content and build backlinks. It’s a key part of link-building and helps increase your site’s visibility.
P
Under P, many terms relate to performance, pages, and search positioning. These directly influence how your content competes in search results.
PAGE EXPERIENCE
Page experience reflects how users feel when interacting with your site. It includes mobile friendliness, load speed, and visual stability.
PAGE SPEED
Page speed refers to how quickly your web page loads for users. Faster pages improve user experience and are a confirmed ranking factor. Slow loading times can lead to higher bounce rates and reduced engagement.
PAGERANK
PageRank is an algorithm developed by Google to rank web pages based on their importance. It’s determined by the quantity and quality of backlinks to a page. While Google no longer openly uses PageRank as a metric, the concept of backlink importance still plays a role in SEO.
PARASITE SEO
Parasite SEO, is an SEO strategy that involves playing on the authority and traffic of well established websites to improve the ranking of another site (blogs, forums, social media). This tactic is often considered controversial.
PENALTIES
Penalties are actions taken by search engines to lower your site’s rankings, usually due to violating their guidelines. Common reasons include spammy backlinks, duplicate content, and keyword stuffing.
PENGUIN UPDATE
The Penguin Update is a Google algorithm update aimed at penalising sites with spammy or manipulative link-building tactics. Understanding updates like Penguin helps you keep your SEO practices aligned with search engine guidelines.
PERMANENT REDIRECT (301)
A 301 redirect is a way to permanently send users and search engines from one URL to another. It’s used when a page has been moved or deleted, helping preserve SEO value.
PPC (PAY-PER-CLICK)
PPC is an advertising model where you pay each time someone clicks on your ad. While PPC is not the same as SEO, it’s often used alongside it to quickly drive traffic to your site.
POSITION (SERPS)
Position refers to where your page ranks on the search engine results page (SERP). Aiming for the top position (Position 1) is ideal, as higher-ranked pages get more clicks.
POGO STICKING
Pogo sticking happens when users quickly return to search results after clicking your page. It may indicate that your content did not meet their needs.
Q
Q terms are less common but often focus on queries and how search engines interpret user intent. Understanding this helps align content with what users are looking for.
QUALITY CONTENT
Quality content is relevant, informative, and well-written material that provides value to users. Search engines prioritise quality content, so focusing on this is key for SEO.
QUERY (SEARCH QUERY)
A query is the word or phrase a user types into a search engine. Understanding what queries your target audience uses helps you create content that matches their intent.
QUERY INTENT
Query intent is the reason behind a user’s search. It can be informational (looking for information), navigational (looking for a specific site), or transactional (ready to make a purchase). Aligning your content with query intent improves your SEO.
QUERY MATCHING
Query matching explains how search engines interpret a user’s request and match it to suitable pages. Good content aligns naturally with this process.
QUALIFIED TRAFFIC
Qualified traffic refers to visitors who are more likely to take action on your site (e.g., make a purchase). Attracting qualified traffic is more valuable than simply increasing the number of visitors.
QUICK WINS
Quick wins in SEO are small, easy changes you can make to improve your search rankings quickly. These can include optimising meta tags, fixing broken links, or improving page speed.
R
R-related SEO terms usually cover ranking systems, relevance, and redirects. These influence how pages are evaluated and displayed in search.
RANKBRAIN
RankBrain is part of Google’s algorithm that uses machine learning to understand search queries and match them to relevant content. It helps improve search results by interpreting the context of queries.
RANKING FACTORS
Ranking factors are the criteria used by search engines to determine where a page should appear in search results. These include content quality, backlinks, page speed, and mobile-friendliness.
REDIRECTS
Redirects send users and search engines from one URL to another. A 301 redirect is permanent and passes most SEO value, making it essential when pages are moved or removed.
REFERRAL TRAFFIC
Referral traffic comes from other sites linking to yours. It is a sign of relevance and supports stronger visibility.
RELEVANCE
Relevance is how closely your content matches a user’s search query. Search engines aim to provide the most relevant results to users, so it’s important to create content that aligns with what people are searching for.
REINCLUSION REQUEST
If your site receives a manual penalty, you can submit a reinclusion request after fixing issues.
RESPONSIVE DESIGN
Responsive design means your website adapts to different screen sizes and devices. A mobile-friendly site improves user experience and is a key ranking factor for SEO.
RICH SNIPPETS
Rich snippets are enhanced search results that include additional information like ratings, images, or prices. Adding structured data (like schema markup) to your site can help you appear as a rich snippet.
ROBOTS (BOTS OR CRAWLERS)
Robots, also known as bots or crawlers, are programs used by search engines to scan and index web pages. Ensuring your site is crawlable helps search engines understand and rank your content.
ROBOTS.TXT
A robots.txt file gives instructions to search engine crawlers about which pages or sections of your site should or shouldn’t be accessed. It’s useful for controlling crawl behaviour, but incorrect use can accidentally block important content from being indexed. Create your own robots.txt file!
S
S terms are heavily tied to structure, search results, and technical elements like schema. These help improve visibility and enhance how your listings appear.
SANDBOX EFFECT
Some new sites appear to rank slowly at first. This period is often referred to as the sandbox, where Google observes a new site before giving it stronger visibility.
SCHEMA MARKUP
Schema markup is structured data added to your site’s code to help search engines better understand your content. It can enhance your search appearance with rich results such as ratings, FAQs, or product information, improving visibility and click-through rates. Create your own business schema markup!
SEARCH INTENT
Search intent refers to the reason behind a user’s query. It could be informational, navigational, or transactional. Matching your content to the correct intent is essential, as search engines prioritise pages that best satisfy what the user is trying to achieve.
SERP (SEARCH ENGINE RESULTS PAGE)
SERP is the page displayed by a search engine in response to a user’s query. It includes organic listings, paid ads, featured snippets, and other elements like local results.
SESSION DURATION
Session duration is the amount of time a user spends on your site during a visit. Longer session durations can indicate high-quality content and improve your site’s engagement metrics.
SEO (SEARCH ENGINE OPTIMISATION)
SEO is the practice of improving your website’s content, structure, and technical aspects to rank higher in search engines. The goal of SEO is to increase organic traffic and conversions. If you are new to SEO, check out my SEO For Beginners hub, where I break down the SEO basics, to help you start ranking.
SITEMAP
A sitemap is a file that lists all the pages on your website. It helps search engines understand your site structure and find new or updated pages for indexing.
SSL CERTIFICATE
An SSL certificate encrypts data transferred between your site and users, making it secure (displayed as HTTPS). Having an SSL certificate is a ranking factor and helps build trust with your visitors.
STRUCTURED DATA
Structured data is code added to your site that helps search engines understand your content better. Using structured data can improve your site’s appearance in search results with rich snippets and enhanced listings.
SCROLL DEPTH
Scroll depth shows how far users scroll on a page. It helps you understand whether they read your content or leave early.
SOCIAL SIGNALS
Social signals refer to the engagement your content receives on social media platforms (likes, shares, comments). While they are not direct ranking factors, social signals can indirectly improve your SEO by driving traffic.
T
Under T, many terms focus on technical SEO and site quality. These are critical for ensuring your site performs well behind the scenes.
TAGS (HTML TAGS)
HTML tags are elements in your site’s code that define the structure and content of your pages. Proper use of tags like heading tags (H1, H2) and meta tags helps improve SEO.
TECHNICAL SEO
Technical SEO focuses on optimising the backend of your site to improve crawling, indexing, and performance. This includes factors like site speed, mobile usability, structured data, and clean architecture, all of which support stronger rankings.
THIN (OR VEILED) CONTENT
Thin content refers to web pages with little or low-quality content. Search engines prefer in-depth, valuable content, so thin pages are often ranked lower.
TITLE LENGTH
Title length is the number of characters in your page’s title tag. Search engines generally display around 50-60 characters, so keeping your title within this limit helps ensure it’s fully visible.
TITLE TAG
The title tag is the main heading that appears in search results and at the top of your browser tab. It’s a key on-page SEO factor, so make sure it includes your main keyword and accurately describes your page. Creating new title tags? Use my Title Tag Generator to see how they will look on the SERPs.
TOPICAL AUTHORITY
Topical authority is how strongly your site is associated with a specific subject. Publishing comprehensive, well-linked content around a topic helps establish your site as a trusted source.
TOXIC LINKS
Toxic links, are commonly associated with bad or harmful backlinks, that are coming into your website. A lot of the reported “Toxic Links” are from SEO programs and are nothing more than a scare tactic.
Google is very good at picking up these “toxic links” and will generally ignore them, and as such these shouldn’t have a negative impact to your SEO – despite what some programs may be saying.
TRAFFIC
Traffic refers to the number of visitors coming to your website. Organic traffic is from search engines, while direct traffic comes from users typing in your URL.
TRAFFIC SOURCES (ACQUISITION CHANNELS)
Traffic sources are where your website visitors come from. The main sources are organic (search engines), direct (typing your URL), referral (other websites), and social (social media).
TRUST FLOW
Trust Flow is a metric created by Majestic SEO that measures the quality and trustworthiness of backlinks to your site. A high Trust Flow score indicates that your site is linked to reputable sources.
U
U terms often relate to user experience and usability. These factors play an important role in engagement and overall SEO success.
UNIQUE CONTENT
Unique content is original, high-quality content that is not duplicated anywhere else. Search engines favour unique content, so avoid copying content from other sites.
UNNATURAL LINKS
Unnatural links are backlinks that are gained through manipulative tactics, like buying links or participating in link schemes. Search engines penalise sites with unnatural links, so it’s best to focus on earning high-quality, natural links.
URL (UNIFORM RESOURCE LOCATOR)
A URL is the web address of a page on your site. A well-structured URL is short, descriptive, and includes your target keyword.
URL STRUCTURE
URL structure is how your URLs are formatted. Clean, readable URLs with keywords help users understand what your page is about.
USER EXPERIENCE
User experience refers to how easy and enjoyable your site is to use. Factors like navigation, readability, and design all contribute to UX, which indirectly influences SEO through engagement signals.
USER SIGNALS
User signals include actions such as clicks, time on site, and interactions. While indirect, they help search engines understand user satisfaction.
USABILITY
Usability refers to how well users can navigate and interact with your site. A site that is easy to use is more likely to keep visitors engaged, which can positively affect your SEO.
USER-GENERATED CONTENT
User-generated content is any content created by your site’s users, like comments, reviews, or forum posts. UGC can improve engagement and provide fresh content for search engines to crawl.
UTM PARAMETERS
UTM parameters are tags added to a URL to track the performance of campaigns. They help you understand where your traffic is coming from, which is useful for analysing the success of your marketing efforts.
V
SEO terms beginning with V typically involve visibility, value, and content formats. These help determine how effectively your content reaches users.
VALUE PROPOSTION
A value proposition is a statement that explains the benefits of your product or service and why users should choose it over others. Clearly conveying your value proposition can improve user engagement and lead to better SEO.
VERTICAL SEARCH
Vertical search refers to specialised search engines that focus on a specific category, such as YouTube (videos), Amazon (shopping), or Google Images. Optimising for vertical search engines can increase your visibility within that category.
VIDEO SEO
Video SEO is the practice of optimising videos to be easily found in search engines. This can include adding keywords to video titles and descriptions and using video sitemaps to help search engines index your video content.
VIDEO SITEMAP
A video sitemap is a specific type of sitemap that helps search engines find and index videos on your site. Creating and submitting a video sitemap can improve your chances of ranking in search results for video content.
VISIBILITY
Visibility refers to how often your site appears in search results. Increasing your visibility means appearing higher and more frequently in search results, ultimately driving more organic traffic to your site.
VISIT DURATION
Visit duration measures how long a visitor stays on your site. Longer sessions often suggest helpful content.
VISITOR
A visitor is any user who comes to your website. Understanding visitor behaviour and preferences through analytics helps you improve your SEO and user experience.
VLOG
A vlog (video blog) is a form of content where you share information in video format. Vlogs are great for SEO as they can drive engagement and keep visitors on your site longer, which is a positive signal to search engines.
VOICE SEARCH
Voice search is the technology that allows users to search the internet using voice commands through devices like smartphones and smart speakers. Optimising your content for voice search often means targeting long-tail keywords and natural language.
W
W terms usually focus on websites, structure, and best practices. These are essential for maintaining a strong and sustainable SEO foundation.
WEB CRAWLERS
Web crawlers are bots that search engines use to scan your website’s pages and add them to their index. Ensuring your site is easy to crawl helps search engines understand your content and improve your SEO.
WEB VITALS REPORT
The Web Vitals report in Search Console shows how your pages perform based on speed and stability. It is a useful way to monitor site health.
WEBMASTER GUIDELINES (NOW KNOWN AS GOOGLE SEARCH ESSENTIALS)
Webmaster guidelines are the rules and best practices provided by search engines like Google. Following these guidelines helps ensure your site meets search engine standards and avoids penalties.
WEBSITE AUTHORITY
Website authority is a measure of how trustworthy and relevant your website is, based on factors like backlinks, content quality, and user engagement. The higher your authority, the better your chances of ranking well in search results.
WEBSITE NAVIGATION
Website navigation is how users move around your site. A well-organised navigation menu and clear internal linking improve user experience and help search engines understand your site’s structure.
WHITE HAT SEO
White Hat SEO refers to ethical SEO practices that follow search engine guidelines. It focuses on providing quality content, earning natural backlinks, and improving user experience rather than manipulating search rankings.
WORD COUNT
Word count is the number of words on a page. While there’s no set rule for ideal word count, longer, in-depth content tends to perform better in search results. However, quality and relevance are more important than length alone.
WORDPRESS
WordPress is a popular content management system (CMS) used to build websites. It is SEO-friendly and offers many plugins to help optimise your site, making it a preferred choice for SEO beginners.
X
X-related terms are more niche and often technical in nature. They still play a role in specific areas like international SEO and data handling.
X-DEFAULT TAG
The x-default tag is a piece of code used in websites with multiple language versions. It tells search engines which page to show users who don’t match any of the specific language settings, providing a better user experience.
XML FEED
An XML feed helps share structured information with other platforms, such as product details for shopping listings.
XML SITEMAP
An XML sitemap is a file that lists the important pages on your website, helping search engines discover and crawl them more efficiently. It is especially useful for large sites or those with complex structures. Creating an XML sitemap and submitting it to Google Search Console can improve your site’s visibility.
Y
Y terms are limited but often relate to specialised SEO concepts and metrics. These can provide deeper insight into performance and content quality.
YIELD RATE
Yield rate refers to the percentage of SEO traffic that completes a desired action, such as signing up or making a purchase. It helps measure the real value of organic search.
YMYL (YOUR MONEY OR YOUR LIFE)
YMYL refers to pages that can impact a user’s finances, health, or overall well-being (e.g., financial advice, medical information). Google holds YMYL content to high-quality standards, so it’s important to ensure content is accurate and trustworthy. This is where E-E-A-T really plays an important part with the information shared.
YOAST SEO
Yoast SEO is a popular WordPress plugin that helps optimise your content for search engines. It provides recommendations for on-page SEO, readability, and more, making it a helpful tool for beginners.
YOUTUBE SEO
YouTube SEO involves optimising your videos to rank higher in YouTube’s search results. This includes using relevant titles, tags, and descriptions and creating engaging video content that retains viewers.
Z
Z terms tend to cover more advanced or less common SEO concepts. Even so, they can be useful when refining or auditing your strategy.
Z-INDEX
Z-index is a CSS property that controls the vertical stacking order of elements on a webpage. While it’s not directly related to SEO, it’s useful for making sure important elements like calls to action are properly displayed.
ZERO-CLICK-SEARCHES
A zero-click search is when a user’s query is answered directly on the search results page, and they don’t need to click any further. Featured snippets, knowledge panels, and Google’s instant answers contribute to zero-click searches.
ZERO POSITION
Zero position refers to placement above the first organic result, usually in the form of a featured snippet.
ZOMBIE PAGES
Zombie pages are low-quality pages on your site that get little to no traffic. Regularly identifying and improving or removing these pages can help improve your overall site quality and SEO performance.
The Bottom Line
This SEO glossary gives you a straightforward way to learn key concepts without feeling overwhelmed. Keep it close as you work through new material and use it whenever you need SEO terms explained in a clear and simple way. Over time, this SEO dictionary will help you feel more confident in your decisions and make it easier to shape a site that supports your goals.
Whether you are learning SEO for the first time or refining your strategy, this glossary acts as a practical reference you can return to as you work.
If you want help turning these terms into a practical plan for your business, I can put that together for you.
