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Excited to learn SEO? It’s a fun learning adventure, but then bam! You hit these weird words that make your brain go, “Huh?” Don’t stress, though. We’re here to keep it easy with this guide.

SEO is already pretty complicated on its own, so let’s not make it worse. In this SEO Glossary, we listed all SEO terminologies, so you don’t need to freak out about fancy abbreviations or confusing words again. Let’s start.

10 blue links 

In SEO terms, that refers to the traditional display of around ten organic search results on Google. However, Google’s experimental Search Generative Experience (SGE), introduced at Google I/O 2023, replaces this format with a dynamic AI-generated interface for instant answers. 

301 redirect 

A permanent URL redirection to ensure users are automatically directed from the old URL to the new one. It transfers all ranking power and tasks, such as migrating from HTTP to HTTPS, for enhanced
security and adherence to Google’s ranking signals. 

302 redirect

A 302 redirect signals a temporary relocation of a website or page. Unlike the long-term redirection of a 301, a 302 redirect is temporary. It guides users and search engines to a different location, but only for a limited time until the redirect is lifted.

307 redirect

An HTTP status code that signals a temporary move of the requested resource to a new URL. In contrast to a 302 redirect, a 307 redirect requires the original request method and body to be used again for the redirected request. 

4xx Status Codes

Signaling client errors, indicating that the request for a resource has flawed syntax or cannot be fulfilled. These errors commonly arise when a webpage is inaccessible, non-existent, or restricted. They draw attention to issues from the client side that prevent the server from fulfilling the request. 

  • 400 Bad Request: The server cannot understand the request due to a client error.
  • 401 Unauthorized: Authentication is required, and the credentials are invalid.
  • 403 Forbidden: The server understood the request but refused to authorize it.
  • 404 Not Found: The requested resource was unavailable on the server.
  • 405 Method Not Allowed: The method specified in the request is not allowed for the resource identified.

5xx Status Codes

Server-side errors indicate that the server is aware of a problem or cannot fulfill a request. Unlike 4xx client errors (issues with the client’s request), 5xx errors originate on the server side. These errors may arise during server downtime, maintenance, or other problems that hinder the proper processing of the request. 

  • 500 Internal Server Error: General server error.
  • 501 Not Implemented: Functionality not supported.
  • 502 Bad Gateway: Invalid response from the upstream server.
  • 503 Service Unavailable: The server is not ready to handle the request.
  • 504 Gateway Timeout: Timely response not received from the upstream server.


A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X


Above the Fold

Above the fold in web design refers to the visible portion of a webpage that users see without scrolling, presenting essential content to capture their attention. This term originates from newspapers, indicating the front page’s upper half featuring significant news. 

Access Log 

A file that records interactions between users and client applications with a computer resource that documents events such as file requests from human users and/or bots on a website. 

Ad Keyword 

An SEO terminology that refers to specific keywords chosen for advertising on search engines. 

Ad Rank

A value used to determine the position of your ads on a page and whether they will be displayed. In Google Ads, it is calculated by multiplying your maximum bid for a keyword or ad group by the Quality Score of the matched keyword. It influences the position of a pay-per-click ad relative to other ads on a search engine results page.  


Someone who partners with a business to promote its products or services and earns a commission for each sale or customer acquired through their marketing efforts. Affiliate traffic generates faster results and strengthens the SEO strategy by improving the webpage’s search engine ranking. 

AJAX (Asynchronous JavaScript and XML) 

A web development technology that facilitates the asynchronous updating of web pages through data exchange with a server. It improves web application responsiveness, enabling selective updates without requiring complete page reloads. 


A set of step-by-step instructions designed for problem-solving or performing computations. It dictates how websites are ranked and displayed in search results, which is important in determining relevance and visibility. 

Algorithm Change

The adjustments in the rules regulating search engine result rankings. The Google Algorithm Changes tool monitors average fluctuations in search results, providing insights into recent updates. 

  • Algorithm Update: A substantial modification to the search algorithm that influences the ranking and display of search results.
  • Algorithm Refresh: A reassessment of the current algorithm, typically incorporating new data and adjusting ranking criteria without undergoing a major overhaul.
  • New Algorithm: Introduces an entirely new set of rules and criteria for evaluating and ranking web content. Some of Google’s major new algorithm updates are Panda, Penguin, Hummingbird, and Bert. 

Alt Attribute

Also alt tag or alt txt in HTML and XHTML documents providing alternative text for images when they cannot be displayed. This text helps screen-reading tools describe images to users with visual impairments and supports search engines in efficiently crawling and ranking websites. 

AMP (Accelerated Mobile Pages)

A tool that helps make mobile websites faster and more user-friendly. It uses simplified HTML, CSS, and JavaScript versions to prioritize speed, resulting in quicker loading times on mobile devices. 

Anchor Text

The clickable text within a hyperlink typically appears in a different color, often blue. This practice helps search engines understand the context and relevance of the link within the content. Good SEO practices stress the importance of having anchor text that is descriptive and relevant to the linked page instead of using generic terms. 

Artificial Intelligence (AI)

An advanced computer system designed to perform tasks that typically require human intelligence. AI tools are used for tasks such as content optimization, predictive analysis, and search engine algorithm improvements. 

Average Difficulty

In SEO terminology, this refers to the level of competition for keywords and rankings within a particular industry or niche. It is determined by factors such as the number of competitors, the quality of their content, and the overall competitiveness of the market. 

Average Position

The typical rank of a website’s pages in search engine results for specific keywords. A lower average position (1 or 2) means the website often appears near the top, while a higher average position (10 or beyond) indicates that the website tends to show up farther down in the search results. 

Author Authority

Measures a content creator’s credibility and influence in a specific subject area. It signifies the trustworthiness and expertise attributed to an author, reflecting their level of authority on a given topic.  

Authority Score

A metric that evaluates the overall credibility and influence of a website. A higher authority score often indicates a more trustworthy and influential website in the eyes of search engines. The results are based on three main factors: 

    1. Link Power: Quality and quantity of backlinks.
    2. Organic Traffic: Amount of natural, non-paid website visitors.
    3. Spam Factors (Natural Profile): Evaluation of spam-related factors and authenticity of the backlink profile.




Also inbound link, or incoming link, is a hyperlink from one website to a page on another external site. 


A Chinese multinational technology company specializing in internet search and related services. Established in 2000 by Robin Li, Baidu is a dominant force in the Chinese search engine market, providing features and services similar to Google. The company has been an early adopter of artificial intelligence since 2010, enhancing content discovery on the internet. 


A web search engine developed and operated by Microsoft, replacing its previous search offerings, such as Live Search, Windows Live Search, and MSN Search. Launched in 2009, Bing is positioned as an alternative to Google, addressing privacy concerns. Over time, it has become the second-largest search engine in the industry. 

Black Box

An algorithm or model whose internal workings are not transparent or visible to users. This term describes a system where inputs and outputs are observable, but the specific mechanisms driving the results are not disclosed.  

Black Hat

Also, negative SEO, in the SEO glossary, is an unethical or manipulative practice that violates search engine guidelines to improve a website’s search rankings. These practices often prioritize short-term gains but can lead to penalties or removal from search engine results in the long run.  Examples are keyword stuffing, cloaking, and acquiring backlinks through manipulative means.  


Short for “weblog,” an online journal or informational website usually presents information in reverse chronological order, with the latest entries displayed first. It serves as a popular platform for individuals, groups, or corporations to share opinions, insights, and regularly updated content on specific topics, often with the potential to generate income. 

Bounce Rate 

Bounce Rate is the percentage of visitors who land on a webpage and leave without navigating to other pages. It’s an engagement metric calculated by dividing single-page sessions by all sessions on a website. A good bounce rate is typically around 40% or lower, indicating effective engagement, while a 60% or higher rate may suggest a need to evaluate and improve page content. 


Shortened term for “robots” in the context of technology and the internet. Bots are automated software programs operating on the Internet, executing repetitive tasks over a network. While some bot traffic is beneficial, such as intellectually independent chatbots that use machine learning, there are also malicious (spam) bots that can pose security risks. 

Branded Keyword 

Specific phrases associated directly with a brand, its products, or services. These keywords typically include the brand name or variations of it and are unique to the domain. They serve as search queries used by potential customers seeking more specific information about the brand. 


In SEO terminologies, breadcrumbs provide a trail of links representing the path from the homepage to the current page,  typically displayed near the top of a webpage. Users can click on these links to quickly navigate back to higher-level pages in the site’s structure.  

Broken Link

A hyperlink on a web page leading users to a resource that doesn’t exist or cannot be accessed within the same website or externally. Clicking on these links results in an error message, signaling that the intended web page cannot be found or accessed. 

B2B (Business-to-Business)

The electronic commerce (e-commerce) transactions in SEO terms where products, services, or information are exchanged between businesses rather than individual consumers. In the B2B business model, companies create and provide products and services to other firms to form a commercial relationship. 

B2C (Business-to-Consumer)

Represents transactions or interactions where businesses sell products or services directly to consumers. In a B2C model, companies focus on marketing and selling goods or services to a mass audience of individual customers. This form of commerce involves relatively simpler transactions compared to B2B.




A software or hardware component that temporarily stores data to reduce retrieval time when an application is reaccessed. It serves as a high-speed data storage layer, storing a subset of transient data to speed up load times in browsers, servers, and applications.  

Cached Page

A duplicate of a web page that is stored temporarily in the data storage (cache). It can be saved by a search engine on its servers or by a user’s browser on a computer or smartphone. When Google takes a webpage snapshot, it creates a cached version, recording how the page appears at that moment as a backup for reference. 

Call to Action (CTA)

A prompt urging immediate user response, commonly seen as buttons or links in digital contexts. It encourages actions such as purchasing, signing up, or navigating to another webpage. 

Canonical URL

The selected main URL for a piece of content that is determined through canonicalization. It is implemented using a canonical tag in a page’s <head> section, helping search engines identify and index the preferred version of a webpage to prevent duplicate content issues.
It looks like this:
<link rel=”canonical” href=”” />

ccTLD (Country Code Top-Level Domain) 

An internet domain extension designated for a specific country, sovereign state, or dependent territory identified by a country code. These domain extensions, like .us for the United States or .uk for the United Kingdom, are often used to localize website content. While some ccTLDs have restrictions, organizations may choose generic top-level domains (gTLDs) like .com, .net, or .org for broader international appeal. 


In SEO glossary, this is an online mention of a business’s name, address, and phone number (NAP). Citations are commonly found in local business directories, websites, social platforms, and other online sources.  

Click Bait

A sensationalized headline or text designed to attract attention and entice users to click on a link, often leading to articles, images, or videos. It involves using exaggerated or misleading information to generate clicks and engagement rather than presenting objective facts. 

Click Depth (Page Depth)

It measures how many clicks it takes to go from a website’s homepage to a specific page.  It quantifies the depth of interaction required to reach a particular page within the site’s structure. The lower the click depth, the fewer clicks it takes to access a specific page from the homepage. 

Click-Through Rate (CTR)

The percentage of individuals viewing a web page who click on a specific advertisement displayed on that page. It is a metric that measures the ratio of clicks an ad receives to the total number of users who view it. CTR is a key indicator of user engagement, comparing the number of clicks on content to the number of impressions it receives. 


A deceptive strategy that displays different information to users and search engines, often as a spamdexing technique to manipulate rankings and achieve a higher position. It involves presenting one version of the website to search engines and a different version to regular users.  

CMS (Content Management System)

A software designed to manage and facilitate website content creation, editing, and publication. One popular example is WordPress. CMS enables multiple contributors to collaborate in managing website content, and its functionality can vary widely based on the specific software used. 


It is when a website is mentioned by two different sources, even if not directly linked. This occurs when a third-party website includes references or links to two different sites, and sites with good co-citation tend to rank higher. 

Code To Text Ratio

A measure that shows the percentage of real text content on a webpage compared to the HTML code. It helps to pinpoint pages that might benefit from having more substantial text for improved information when search engine crawlers analyze them 

Comment Spam

A sample of Black Hat SEO tactic used to boost a site’s link popularity and anchor text by posting unwanted comments. Since 2003, comment spammers have aimed to improve their site’s search ranking by creating dubious inbound links through these unwelcome comments.


In the SEO glossary, this refers to websites that hold prominent rankings for the keywords you are aiming to target. Your top SEO competitors are those that appear on the first page of search results for keywords relevant to your content or business. 


The textual, visual, or multimedia elements on a website created to enhance the visibility of web pages in search engines. High-quality and relevant content is vital for SEO success. 

Content is King

A widely used phrase in marketing emphasizing the importance of unique, high-quality, interesting, and relevant content in driving website traffic and attracting qualified leads. 

Content Consolidation

Combining or restructuring multiple pieces of content on a website (merging, updating, or eliminating redundancy) to create a unified and authoritative resource 


Conversion refers to the action taken by a visitor on a website, such as making a purchase, filling out a form, or achieving a goal in the sales funnel. 

Conversion Rate

The conversion rate is calculated by dividing the number of completed goals by the total site traffic.  So, if 10 out of 100 visitors make a purchase, your conversion rate is 10.0 percent. 

Conversion Rate Optimization (CRO)

A process of improving the percentage of website users who complete a desired action by analyzing user behavior, testing various elements, and implementing changes. 

Core Update

A modification to the search engine’s ranking algorithm affecting several indexed web pages to enhance the quality of search results. These updates, like the recent October 2023 core search update of Google, have a broad impact on many indexed web pages. 

They are rolled out every few months and can influence content ranking in Google Search or Discover. While larger core updates occur periodically, Google continually makes smaller updates to its search algorithms. 

Core Web Vitals

The specific factors that are important for a webpage’s overall user experience. This initiative provides comprehensive guidance on quality signals, including metrics like CLS, FID, INP, and LCP, to ensure a great user experience on the web. The Core Web Vitals report categorizes URL performance based on status (Poor, Need improvement, Good) and metric type. 

  • CLS (Cumulative Layout Shift): Measures how much a webpage’s content visually shifts during loading.
  • FID (First Input Delay): Assesses webpage responsiveness by measuring the time it takes for a user’s interaction to receive a response.
  • INP (Input Timing): Focuses on the timing and efficiency of user inputs on a webpage.
  • LCP (Largest Contentful Paint): Evaluates loading performance by measuring the time the largest content element becomes visible. 


Often refers to the statistical relationship between certain factors or variables and their impact on search engine rankings. SEO professionals may analyze correlations between various on-page and off-page factors (content quality, backlinks, site speed, etc.) and a website’s performance in search engine results.  

Crawl Budget

The number of pages a search engine crawls and indexes on a website during a specific period. It includes both crawl demand, which indicates the number of pages a search engine intends to crawl on your site, and crawl rate, which determines how quickly the crawling process can be performed. 

Crawl Error

It happens when a search engine attempts but fails to access a page on your website. These errors occur when Google or other search engines encounter issues while trying to crawl your site. Two crawl error types are URL errors and site errors. 


Also web crawler, spider, or spiderbot. A computer program designed to browse the World Wide Web systematically to search and automatically index website content and other information by repeating specific online actions. Search engines use crawler programs to collect data and keep their indexes updated. 


The process by which search engines systematically browse and index web pages on the internet to understand their content and relevance for search queries. 

CSS (Cascading Style Sheets)

A simple design language used to style and present documents written in markup languages like HTML. It provides a flexible mechanism for designing web content, allowing for the customization of fonts, colors, spacing, and layout. 

Customer Journey

The sequence of actions and interactions a user goes through from their initial search for information on a search engine to their eventual conversion on a website.




The information and metrics collected through various tools and platforms to analyze the performance and effectiveness of a website in search engine results. This data includes website traffic, keyword rankings, click-through rates, conversion rates, and user engagement. 

Dead-End Page

A web page lacking navigational links, stopping users from moving to other pages within the same website. This can result in a poor user experience and often requires them to just use the back button. 

Deep Link 

Hyperlinks that direct users to specific pages or content within a website rather than the homepage or a top-level domain. These links point to pages or resources, giving users direct access to the relevant and specific content they are looking for. 

Deep Link Ratio

It measures the portion of links pointing to specific pages on a website and is calculated by dividing the number of deep links by the total number of links on the site. A higher DLR means the site is well-organized with diverse and valuable content, which can boost its ranking. 


The process of removing pages from a search engine’s index, done by the website owner or search engine. It effectively eliminates the presence of the page/website in search results while leaving the content intact on the source web page. This can occur due to updates on a website or misconfigurations in its web settings. 

Direct Traffic

Sometimes called dark traffic, it happens when a visitor type or paste the URL, click a bookmark or reach the site without a defined source or referring site. This traffic doesn’t come from external links or referrals but involves visitors arriving directly at the website. 


Directories are online platforms organizing websites or information into categories. They were more prominent in the early days of the Internet but still serve specific purposes, like local business listings or industry-specific information. Directory submission involves submitting a website to gain backlinks from relevant directories. 


The act of removing harmful links directed towards your site, to minimize potential harm to your site’s ranking caused by low-quality links. This process includes requesting Google to disregard specific links; if approved, those links won’t be considered when assessing your site’s position. 

DMOZ (Directory Mozilla)

DMOZ, or the “Open Directory Project” (ODP), was a big web directory that sorted websites into categories. It used human editors for the organization but has closed now, marking the end of when people played a significant role in organizing internet directories. 


A do-follow link is a hyperlink without a “nofollow,” “UGC,” or “sponsored” attribute, allowing search engine crawlers to follow and count it as a vote of quality. Introduced by Google in 2005, a do-follow link is an HTML attribute that passes authority from the origin site to the destination site.   


The main web address associated with a website that is basically part of a website’s URL. Example:

Domain Age

A measure of how long a specific domain name has been registered 

Domain Authority

A numerical score, measured between 1 and 100 that assesses the overall strength and credibility of a domain to rank on SERPs; scores between 50 and 60 are considered good, while those above 60 are rated as excellent

Domain History

A detailed record that tracks a domain name’s ownership, usage, and registration information over its lifespan, offering insights for research, security, and SEO optimization. 

Doorway Page

Also gateway page, jump page, or mirror page, in the SEO glossary is a webpage created to target specific keywords, redirecting visitors to another page. While aiming to boost website traffic, these pages, characterized by low-quality content, can disrupt users seeking quick access to relevant information. 


DuckDuckGo is an independent internet privacy company offering a privacy-oriented search engine and browser alternatives to Google Chrome. It is known for prioritizing user privacy by avoiding tracking and compiling search results from various sources, including its own crawler, DuckDuckBot.

Duplicate Content

It occurs when identical or similar content is present at multiple web locations (URLs). It can lower search rankings and confuse search engines in identifying the authoritative source for specific content. 

Dwell Time

The duration users spend on a webpage after clicking a search engine link before returning to the search results.



E-A-T (Expertise, Authoritativeness, and Trustworthiness)

A concept used by search engines like Google to assess the quality and reliability of a website’s content.  In a 2022 update, Google added an extra “E” for Experience (E-EA-T), highlighting the significance of the user’s overall experience with the content. 


Refers to how users interact with a website’s content and how well it captures and maintains their attention. High engagement indicates that users actively participate, respond, or show interest in the provided content.  

Engagement Rate 

Key indicators include metrics like the time users spend on a page, the number of pages they visit, and the interaction with elements such as comments, social shares, or form submissions. The formula is calculated by dividing the total engagement (likes, comments, shares, clicks) by the post’s reach and multiplying the result by 100.  

Estimated Accuracy

The expected precision or correctness of a measurement, calculation, or prediction based on available data and statistical models. It tells how confident or reliable the estimate is. 

Estimated Traffic

The anticipated volume or number of visitors, users, or interactions expected on a website, webpage, or online platform within a specified period. This estimation is often based on various factors, including historical data, analytics, and predictive models. 

External Link

Also outbound link, is a hyperlink on a website that directs users to a different domain. These links are valuable for search engine optimization, as they contribute to a website’s backlink profile.



Featured Snippet

A brief text excerpt displayed at the top of Google search results, offering a quick answer to a user’s query and appearing in a special format known as “position zero.”

Fetch and Render Tool

It retrieves and displays webpages like a search engine bot, offering source code and a snapshot for SEO assessment. It makes SEO work easier and shows how Google and people view the page. 

File Compression

Reducing file size through compression algorithms to enable efficient storage and faster data transmission


Refers to how easily users and search engines can discover a brand’s online content through search, social media, and interactions on the website. 

First Link Priority

The concept that the initial link on a webpage is accorded greater significance than subsequent links on the same page. According to this principle, Google may disregard links beyond the first when a webpage contains multiple links to the same destination. 

Footer Link 

A navigation tag located at the bottom of web pages, either internal or external, and is categorized as a “site-wide” link since it appears on every page, impacting a website’s ranking and performance in organic search results. 


A ranking factor that prioritizes recently updated content for specific queries, preventing outdated pages from dominating search results. The Freshness Update aims to maintain search relevance by favoring newer information, especially for time-sensitive and trending topics.



GA (Google Analytics)

A free web analytics service provided by Google, offering statistics and tools for SEO, marketing, and business insights. It collects data from websites and apps to generate reports to help understand customer behavior and inform strategic actions.

GMB (Google My Business)

A free tool provided by Google that allows businesses to create and manage their online presence, including their business listing on Google Maps 


A multinational technology company founded in 1998, known for its internet-related products and services, including the widely used search engine and offerings in cloud computing, software, and hardware. Google’s diverse portfolio includes online advertising, email services, and developing the Android operating system for mobile devices. 

Google AdSense

A free advertising program by Google that enables online publishers to earn money by displaying third-party ads on their websites. It allows website owners to monetize their content through display ads, sharing revenue based on clicks or impressions.

Google Ads Algorithm

It controls the operation of Google Ads by establishing Ad Rank through contextual and keyword targeting. It uses prediction models based on user behavior data to determine ad placement and keyword bidding. 

Google Bomb

A black-hat SEO tactic involving coordinated links to boost a webpage’s rank in Google search results for specific keywords. This often leads to the page ranking unusually high for unrelated or irrelevant terms. 


Google’s web crawler, a specialized software that navigates public websites by following links. Its primary purpose is to collect information for building Google’s searchable index of the web.

Google Dance

In SEO Glossary, this is a slang for the unpredictable ranking fluctuations of a new website or page in Google’s search results, particularly during monthly updates to the ranking algorithm.

Google Hummingbird (2013)

A search algorithm that replaced the previous Caffeine algorithm. Designed to anticipate the needs of mobile users, it brought a significant shift in search by focusing on semantic search—meaning-based queries instead of literal word matching. This update marked the turning point in how Google generated search results. 

Google Panda (2011)

An algorithm update that aimed to reward high-quality websites while demoting those with thin or low-quality content. 

Google Penguin (2012)

An algorithm update targeting websites that manipulate search results through link schemes, focusing on the balance of high-quality, natural links in the overall link profile.

Google Pigeon (2014)

A local search algorithm update that strengthens the link between Google’s local and web algorithms. It prioritizes distance and location for more accurate results, particularly benefiting businesses with effective SEO practices.

Google RankBrain (2015) 

A machine learning-based component of Google’s core algorithm that sorts and understands search results using artificial intelligence to adapt and learn from user interactions. 

Google Sandbox

A hypothetical effect that new websites may face, a probationary period during which they experience lower visibility in search results, even with high-quality content. It’s a term used in the community to describe the observed delay in Google ranking for newly established websites

Google Search

A web search engine developed by Google that allows users to find information on the World Wide Web.

Google Search Console

A free service by Google for website owners to monitor and analyze their site’s performance in Google Search that provides insights into search visibility, indexing, and other aspects of a website’s presence. 

Google Search Quality Evaluator Guidelines

Also Quality Rater Guidelines, is a comprehensive handbook with over 170 pages. It provides instructions for global search raters to assess and enhance search result quality based on factors such as E-A-T, influencing the performance of search ranking systems. 

Google Tag Manager (GTM) 

A free tool facilitating the easy management and deployment of marketing tags on a website without code modification that allows customization based on specific pages, triggers, variables, and actions. 

Google Trends 

A free tool by Google that analyzes search queries, offering insights into the popularity of keywords over time, from global trends to local data, and providing valuable information for keyword research.

Google Webmaster Guidelines

Now Google Search Essentials, provides website owners with best practices for improving indexability and crawlability that offer rules and recommendations to optimize sites for better search engine rankings and create high-quality websites.

Gray Hat

A gray hat hacker is someone who falls between white hat and black hat hackers, engaging in activities that may breach ethical standards without malicious intent. They often report vulnerabilities to software vendors as part of their actions. 

Guest Blogging

Also, guest posting, is the practice of writing and publishing articles on another person or company’s website as a marketing tactic to share expertise, promote a brand, and often include links back to the author’s content.




Or header tags, are signposts guiding readers through an article by indicating the content of sections or paragraphs. These tags, ranging from H1 to H6, separate headings and subheadings on a webpage, influencing the page’s structure, user experience, and search engine rankings. 


The title of the text you see in search results balancing what search engines need with what users find interesting. A carefully crafted headline with a target keyword and ideally under 60 characters is vital for SEO to influence online visibility. 

Head Term

Also head keyword, are broad and high-volume search keywords for increasing organic traffic and achieving a competitive position. These are usually short, generic terms that have high search volume but may be more challenging to rank for due to intense competition. 

Hidden Text

A technique, often considered spam, where text or links are intentionally concealed from website visitors but visible to search engine crawlers to manipulate search rankings. 

Hilltop Algorithm

Introduced by Google in 2003, it works alongside PageRank to determine authoritative web pages for ranking. It assesses a site’s expertise by considering content, history, and links, particularly focusing on outbound links to other sites within specific topics. 

HITS Algorithm Hyperlink-Induced Topic Search

Also Hubs and Authorities, is a link analysis algorithm developed by Jon Kleinberg that rates web pages based on two scores—hub score and authority score—to discover and rank pages relevant to specific topics through the analysis of web link structures. 


A website’s main page, serving as visitors’ initial point of entry for visitors and offers an overview of the site’s content and navigation options.

.htaccess File (hypertext access)

A hidden configuration file used on Apache Web Servers. It allows for directory-specific configuration changes with flexible means to configure additional website features without modifying the server configuration. 

HTML (HyperText Markup Language)

A standard markup language for designing web pages that defines the structure through elements that enclose and organize content such as headings, paragraphs, lists, links, and quotes. 

HTTP (Hypertext Transfer Protocol)

The set of rules that enables the transfer of files over the web, serving as the foundation for data communication on the internet. It facilitates the retrieval of resources like HTML documents. 

HTTPS (Hypertext Transfer Protocol Secure)

The secure version of HTTP that uses encryption to ensure secure communication between a web browser and a website to protect data transfer. 

Hub Page

A central, navigational page for specific topics that organizes and links to related content, acting as a hub for more detailed pages and providing a comprehensive overview of the main topic on a website.

Hypertext Preprocessor (PHP)

A powerful programming language used to create dynamic and interactive web pages, enhancing search engine optimization by simplifying content generation and formatting.




The process where search engines include web pages in their database to make them eligible to appear in search results. 


A website’s capability to be cataloged by search engines

Indexed Page

A web page that has been discovered, crawled, and added to the database of a search engine 

Information Architecture (IA)

A critical aspect of web usability and SEO that focuses on organizing and labeling content for optimal user experience and search engine visibility.

Information Retrieval (IR)

The process of extracting relevant information from a source often involves algorithms matching user queries to displayed documents. In SEO terms, it pertains to the user’s search query and how search engines retrieve and present information.

Internal Link

A hyperlink from one page on a website to another page within the same domain

IP Address (Internet Protocol)

A unique numerical identifier assigned to devices within a computer network



JavaScript (JS)

A dynamic programming language used in web development to create interactive webpages, allowing for the updating of HTML and CSS, as well as the manipulation and validation of data for enhanced user interaction. 

JSON-LD (JavaScript Object Notation for Linked Data)

An on-page markup that annotates web page elements, aiding in the creation of structured data. Google recommends its use for easy implementation of structured data, offering a readable and writable format for web content with open vocabularies like




A specific word or phrase that users enter into search engines, and optimizing content around these terms helps improve a website’s visibility in search results.

Keyword Cannibalization

This happens when content on different pages ranks for the same keyword cluster and shares the same search intent, splitting click-through rates, links, and content effectiveness, thus harming overall performance. 

Keyword Density

The frequency of a specific keyword’s occurrence on a webpage in relation to the total word count, represented as a percentage. The formula is (Number of times keyword appears/Total number of words on the page) x100 = KD. 

Keyword Explorer

A time-saving keyword research tool for finding profitable keywords, organizes them into lists, and assesses the difficulty of ranking in the top 10 search results for a given keyword.

Keyword Prominence

Strategically placing keywords in the HTML source code to enhance a webpage’s search engine ranking by emphasizing the location of specific words. 

Keyword Research

The systematic process of identifying and analyzing the search terms people use on search engines, such as Google, to optimize a website’s content for improved visibility and ranking.

Keyword Stemming

It involves modifying keywords with different prefixes, suffixes, variations, or even misspellings to enhance search engine understanding and capture a broader range of relevant searches. 

Keyword Stuffing

Excessively using a target keyword in on-page content to manipulate search engine rankings for that keyword. This practice is considered a webspam or spamdexing technique to deceive search engines. 

Knowledge Graph

A database used by search engines to enhance search results by providing factual information about people, places, and things, helping users find relevant information directly on the search results page.

Knowledge Panel

A section displayed on a search engine results page that provides concise information sourced from the Knowledge Graph database to offer users quick and relevant details without clicking on a specific website.

KPI (Key Performance Indicator)

A measurable metric used to assess progress toward a specific goal or objective focusing on strategic evaluation in understanding organizational or individual performance.



Landing Page 

A dedicated webpage where visitors arrive by clicking on links, often from email or digital ads, to persuade them to take a specific action. 

Latent Semantic Indexing (LSI)

A method that analyzes documents to uncover semantic relationships between words and content context, aiding in information retrieval and enhancing content understanding for search engines. 


A potential customer who has expressed interest by taking actions like filling out a form or subscribing to get their contact information for future engagement.


A clickable (hyperlink) connection between webpages influencing a site’s authority and search engine ranking by establishing relationships between different pages. 

Link Accessibility

Ensuring the ease of navigation for search engine crawlers and users, including those with disabilities, so they can easily navigate and interact with online content. It ensures that links are well-structured, functional, and easily accessible.

Link Bait

Creating valuable and compelling content to attract backlinks from other websites. This SEO strategy relies on the content’s intrinsic value, encouraging bloggers, journalists, and other online sources to link to it organically.

Link Building

The practice of acquiring high-quality hyperlinks from external websites to improve the authority and search engine ranking of your own web pages. 

Link Equity

Also link juice, represents the authority passed from one webpage to another through hyperlinks, influencing the destination page’s ranking.

Link Exchange 

A practice where two websites agree to link to each other’s content. This reciprocal linking strategy was once commonly used to boost a website’s search engine rankings by increasing the number of inbound links. 

Link Explorer

A tool that allows users to analyze and view the backlink profile of a particular website. 

Link Profile 

The collection of links pointing to a website, including information about the quantity, quality, and diversity of these links for assessing and enhancing its search engine rankings. 

Link Stability

The reliability of a link, measured by its ability to remain on a webpage without changes for an extended period. It involves identifying and removing low-quality or spammy links from search results to enhance overall result quality and relevance for users. 

Link Velocity

The rate at which a website or page acquires backlinks, typically measured in links per month or referring domains per month. The concept suggests that the speed of gaining links may impact rankings, and a higher link velocity can indicate popularity and authority within a specific field.

Links, NoFollow

Nofollow links, or nofollow attributes, indicated by the “rel=nofollow” tag, are hyperlinks instructing search engines not to pass authority or ranking value from the source page to the linked page. These links do not contribute to PageRank or impact a page’s placement in search results.  

Local SEO (Local Search Engine Optimization)

Optimizing a website to enhance its visibility in local search results, focusing on improving rankings and brand awareness for local businesses. 

Log File

A record generated by a web server that documents a chronological list of activities and interactions between a website and its server. 

Log File Analysis

Provides search engine crawling behavior that helps diagnose technical issues and understand site interactions. 

Long-Tail Keyword 

Specific search queries with lower search volumes but refined intent, often composed of a few words to provide more precise results.



Machine Learning

The application of artificial intelligence that enables computer systems to automatically learn and improve from experience without being explicitly programmed. It helps search engines analyze and understand user behavior, improve search result relevance, and refine ranking algorithms based on changing patterns and data. 


Main Navigation

The primary menu on a website for user navigation and optimizing both user experience and search engine visibility.


Manual Action

Also, Google Penalty, is a punitive measure or action taken by a human reviewer at a search engine when they identify a violation of guidelines on a website. 


Manual Penalty

The negative consequences or penalties imposed on a website as a result of a manual action, which can include a drop in search rankings or removal from the search index until the issues are resolved. 


Meta Description

A brief 155-160 character summary that appears in search results, presenting users with an overview of a webpage’s content and encouraging them to click by highlighting the page’s usefulness. 


Meta Keywords

Used to specify a list of keywords relevant to the content of a webpage. They were included in the meta tags, and though once influential, they no longer directly impact rankings and are less crucial for SEO. 


Meta Tags

HTML elements in the head section of the HTML code, providing information about a webpage to search engines and website visitors. Types: meta title (or title tag), meta description, meta viewport, and others.



A quantifiable measurement that evaluates the performance of aspects like website traffic, user engagement, and keyword rankings. 


Mobile Optimization

The process of customizing a website to offer an improved experience for users on mobile devices such as smartphones and tablets.



National SEO 

Optimizing a website for broader, nationwide searches, making it suitable for businesses with a widespread reach. It includes keyword research and strategies to rank for highly-searched terms across the country.  


Natural Link

Also an organic link, is a high-quality backlink that is organically generated, not easily acquired, and occurs on the web without intentional effort from the linked website. These links are considered genuinely relevant and come from other blogs or websites.

Negative Keywords

Words or phrases used in paid advertising campaigns to exclude ads from appearing when users search for terms unrelated to the advertised products or services to reduce irrelevant clicks.

Noarchive Tag

An HTML meta tag that webmasters can include in the head section of a webpage to instruct search engines not to store a cached copy of a webpage to prevent the display of a cached version in search results.


Noindex Tag

Implemented either through a <meta> tag or an HTTP response header, this directive instructs search engines not to index specific content, thereby preventing its inclusion in search results. 


Nosnippet Tag

Also data-no snippet, directs search engines not to display a text, image, or video snippet of a page in search results


“(not provided)”

In Google Analytics and SEO terms, it refers to the organic search keywords that are deliberately concealed by Google to protect user privacy. Despite this, Google has offered a workaround for accessing this data while maintaining privacy measures.



Off-Page SEO

Focuses on external activities, such as building backlinks and social media marketing, to enhance a website’s authority and visibility.

On-Page SEO

Optimizing individual web pages for better search engine rankings by adjusting content, meta tags, and HTML elements directly on the webpage

Organic Search

The natural, non-paid results displayed by search engines in response to a user’s query based on relevance to the search terms and the website’s overall SEO rather than being influenced by advertising or paid promotions. 

Orphan Page

A webpage not linked to from any other page on the same website, resulting in poor user experience and search engine difficulties in discovering and evaluating the page.




A Google algorithm developed in 1997 by Larry Page and Sergey Brin to assess webpage importance based on link quality and quantity they receive that influence their position in search engine results.


Page Speed

The time it takes for a webpage to load, influencing user experience and search engine rankings. This measurement spans from the browser’s request until content processing is complete.  


Page Title

The HTML element displaying the webpage’s title at the top of the browser and in search results that summarizes its content. 


Page View

A metric in SEO terminology that measures the number of times a particular webpage has been viewed or loaded by users, indicating its popularity and visibility.

Paid Search

A digital marketing method where businesses pay search engines for ad placement on SERPs. One popular model is the PPC advertising. 


PBN (Private Blog Network)

A group of websites created solely to provide backlinks to a central website to enhance its authority in search engine rankings. 



Also search persona in SEO terms is a fictional representation of an ideal target audience for a website or content to help better meet the needs and preferences of specific user groups for more targeted and effective strategies. 



Customizing content and user experiences based on individual preferences to enhance relevance and engagement.



The unauthorized use or distribution of digital content (text, images, or software) without the owner’s permission.



Refers to users bouncing between search results on a results page to find a satisfying answer; a high pogo-stick rate can harm SEO by signaling user dissatisfaction with the top result.


Position Zero 

In SEO terminology, this is the top Google search result, often a featured snippet, that appears above organic listings and provides a direct answer to a search query. 


PPC (Pay Per Click)

An online advertising model where advertisers pay a fee each time their ad is clicked, providing a way to drive traffic to websites and generate revenue for search engines or other online platforms hosting the ads.


QDF (Query Deserves Freshness)

A component of Google’s algorithm that prioritizes newly created content for topics actively covered by news sites or blogs. This ensures that search results display the most relevant and up-to-date information for specific queries.



Readability Score

Assesses how easily and comprehensibly written content can be understood by readers. Different readability formulas or tools assign scores based on factors like sentence length, word complexity, and other readability metrics to help gauge the readability level of the content. 



A method of guiding users and search engines to a different URL than the one originally requested, often used to inform about URL changes or page deletions through HTTP status codes. 


Referral Traffic 

A metric for inbound marketers, indicating visits to a website from links on external sites, including affiliates and trusted domains.  



An optional field in the HTTP header that reveals the URL of the page a user visited before clicking a link to the current page. 



Also reconsideration, is asking a search engine to re-index a website previously penalized or removed from the index. This process is initiated after addressing and rectifying the issues that led to the website’s removal. 


Reputation Management 

Or Online Reputation Management (ORM), is the process of enhancing a website’s visibility in search engine rankings and ensuring a positive brand image in search results, such as monitoring, addressing, and shaping the narrative around the brand. 


Responsive Design

A web design approach that adjusts a website’s size and layout to fit the screen of the device being used

Rich Snippet

Also a rich result, is an enhanced Google search result that offers additional details about a webpage. These details are derived from schema markup and often result in higher click-through rates. 



A document created by webmasters to instruct search engine robots on which pages to crawl or avoid crawling on a website, providing guidelines for indexing and access.


Root Domain

The highest hierarchical level of a website, represented by the combination of a second-level domain (SLD) and a top-level domain (TLD), such as It serves as the overarching structure containing subdomains and all associated URLs for the site.



SaaS (Software as a Service)

A cloud computing business model where software applications are hosted and delivered to users over the internet on a subscription basis, eliminating the need for users to install, maintain, or manage the software locally.  


Or structured data, is a code standard from added to webpages to assist search engines in understanding and categorizing content, leading to enhanced descriptions or rich results in search listings. 

Search Engine

A software program or service facilitating internet users in finding information by searching a database for items matching specified criteria. Users input keywords, and the search engine retrieves relevant results from the World Wide Web. Examples are Google, Bing, Yahoo, and Yandex.  

  • Search Engine Marketing (SEM). Paid strategies to increase a website’s visibility on search engine results pages
  • Search Engine Optimization (SEO). Optimizing a website’s content and structure to improve its organic (non-paid) search engine rankings
  • Search Engine Results Page (SERP). The page displayed by search engines in response to a user’s query contains a list of results for that query.

Search Volume

The frequency with which a specific keyword or phrase is used in search engine queries 

Serviceable Available Market (SAM)

The realistically targetable portion of the total addressable market based on factors like geographical limitations, market demand, and the company’s capabilities. 

Share of Voice (SOV)

Assesses your brand’s visibility and awareness relative to competitors, measuring how frequently websites rank for specific keywords in organic search.


A file or structured list of URLs that acts as a blueprint for your website to help search engines discover and index all crucial content. 



Extra links displayed below a website’s main search result on a search engine results page to offer quick access to specific pages within the site.


Social Signal

Are metrics from social media interactions, such as likes, comments, and shares 



Unethical practices, like keyword stuffing or unnatural link building, that violate search engine guidelines and can lead to penalties or removal from search indexes 

Unethical practices that violate search engine guidelines 


Split Testing

Also A/B Testing, divides similar website pages into control and test groups to experiment with changes in on-page elements. The goal is to compare the impact of these changes on driving organic traffic through statistical analysis. 


SSL (Secure Sockets Layer) Certificate 

Also, TLS (Transport Layer Security) Certificate, authenticates a website’s identity and enables encrypted connections for secure web traffic. Issued by a Certificate Authority (CA), it verifies the organization’s identity and domain, establishing trust and providing industry-standard encryption.

SRCSET (Source Set) 

The “srcset” attribute in HTML specifies a list of image file URLs and size descriptions for responsive images, allowing the browser to choose the optimal image based on screen size and resolution.  


Standard Generalized Markup Language (SGML)

An international standard for representing information that defines elements with start tags, content, and end tags, providing a framework for markup languages.



a separate section of a website, often created by adding a prefix to the main domain, like “” and is treated independently by search engines.



Top-Level Domain (TLD)

The last part of a domain, like “.com” or “.org,” indicating the website’s type

Total Addressable Market (TAM)

The overall revenue opportunity available for a specific product or service within a defined market, assuming 100% market share and no constraints. 

Transactional Queries

Search requests expressing the user’s intent to complete a specific action, often involving a purchase or order.



UGC (User-generated Content)

Content created by users, such as comments or reviews that adds interactivity and dynamism to online platforms 

URL (Uniform Resource Locator)

A web address that specifies the location of a resource on the internet starting with “http://” or “https://.”

  • URL Folders: Segments that indicate the structure of a website in organizing its content. 
  • URL Parameter (Query String): Additional data in a URL appearing after a question mark (?) that influences the content or behavior of a webpage.

User Agent 

A software agent, like a web browser, that acts on behalf of a user when interacting with 



User Experience (UX) 

The overall experience a user has when interacting with a website, focusing on factors such as usability, accessibility, and satisfaction. 


User Intent

The specific goal or intention a user has when entering a search query, influencing the type of content or information they seek.


UTM ((Urchin Tracking Module) Code 

A snippet of code appended to a URL to track the performance of content and social media campaigns using elements known as UTM parameters (Campaign, source, medium, content, and term).



Vertical Search Optimization (VSO)

The process of optimizing content for specialized search engines that focus on specific domains, industries, or types of content, distinct from traditional SEO.  


Video SEO (VSEO)  

A branch of SEO that optimizes video content to enhance its visibility and ranking on search engine results pages. 



The extent to which a website or webpage appears in search engine results for relevant queries, for accessibility to users searching for specific topics or information. 


Voice Search Optimization 

It optimizes online content for visibility and relevance in voice-activated searches, adapting to natural language patterns used with devices like virtual assistants and smart speakers.



Website Taxonomy 

A hierarchical classification system for content organization that helps search engines with accurate indexing and ranking. 


Web Scrapping

In SEO terms, it is the automated process of extracting data from websites, typically using a script or a program, to gather information such as keywords, web page rankings, and competitors’ strategies. 


White Hat

Or ethical hacker, is an individual who uses hacking skills to identify security vulnerabilities in hardware, software, or networks, doing so ethically and with permission to improve cybersecurity.



XML (Extensible Markup Language)

Derived from SGML, is a text-based markup language for defining formats and creating digital documents used for structuring information in a way that search engines can easily understand and process. 


XML sitemaps 

Contains essential information about a website’s pages, emphasizing support for various languages through Unicode.


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