Theoretical SEO

Semantic SEO is to create a content network in a regular and connected structure for each entity within a subject. By focusing on meanings and topics instead of words, it has the purpose of satisfying the search-intent of the user better and being the authority for the Search Engine and the User on a particular …

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RankBrain refers to an algorithm used by Google, which, with the help of machine learning and artificial intelligence, is primarily intended to provide relevant search results for previously unanswered search queries. RankBrain is ranked by Google as the third most important ranking factor. RankBrain was rolled out for the first time in early 2015. When RankBrain sees …

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Keyword stuffing generally refers to the excessive and manipulative use of keywords on a page with the aim of improving the page’s ranking for that keyword without creating any benefit for the user. This technique worked until around the beginning of 2000. It was also common for this tactic to include keywords as “hidden text”  on the page: keywords in …

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Hidden content refers to content or links that can be read from a website in the source text, but is not visible to the visitor of a website. The goal of hiding content is not to restrict the usability of a website (text deserts), but to offer the search engines relevant content. The text enriched and hidden by keyword s has the goal to positively influence the results in the …

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With the increasing popularity of its own search engine, Google also had to recognize that many established processes no longer worked well enough. After all, the idea behind the algorithm and search index was born at a time when there were several million websites in total. At the latest in 2010, however, millions of subpages were added …

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The code name Google Hummingbird (also known as the hummingbird algorithm) refers to a search algorithm that has been in use since 2013, which enables Google for the first time to recognize the connection between search queries. With this method, which is also called semantic search, the search engine can analyze the user intention behind the search queries. As a result of the update, Google is increasingly approaching the …

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SERP is the abbreviation of “Search Engine Result Page” and refers to the search results page after entering a keyword in a search engine. The order of the search results is crucial for search engine optimization. The first page of the SERPs is often referred to as “Top10”. Every result on the SERP is ordered in descending order in terms of quality, …

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The Google Phantom Update denotes an unannounced change to the core algorithm (core algorithm). The first of these updates occurred in the spring of 2015. SEO specialists noticed significant changes in the SERPs. The search engine denied the existence of such an update for a very long time. As a nameless update of the heart algorithm, the phantom update is …

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The over-optimization penalty is used in connection with an algorithm change of the search engine Google, in which websites can suffer a penalty due to excessive SEO measures. It can manifest itself through a downgrading in the rankings or even exclusion from the search engine index. There is a risk of loss of traffic that is generated by search …

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Specifically, the Panda update is a filter that is regularly applied to the entire Google index and significantly reduces the visibility of poor-quality websites, i.e. significantly shifts their rankings in the search results pages. The algorithm change was first introduced on February 23, 2011, in the US search market and then launched on April 11, …

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Link juice, Google juice, or link juice describes the distribution of backlinks within a website and the strength or reputation of these links (PageRank). Both the number and the quality of the links determine how the link juice is composed and what effect it has on the subpages. Most SEOs don’t try to calculate the …

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The TrustRank algorithm is a procedure for evaluating the quality of websites. It was developed by Zoltán Gyöngyi, Héctor García-Molina, and Jan Pedersen and filed for a patent by Yahoo. It is used for the semi-automatic classification of the quality of a page or for finding spam pages and is intended to help search engines …

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Google Sandbox is a phenomenon that mainly affects the ranking of young websites. The effect significantly worsens the ranking of these domains. A full definition of the Google sandbox is not possible because the search engine Google is silent about the existence of the supposed filter. Google says that they don’t have such a filter …

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User intent is the name for the motivation of the searcher, for example when entering his search into a search engine. Google and other search engines evaluate the hits found in terms of content and evaluate how well they match the suspected user intent. The better this fit between the information on a website and …

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TF * IDF is a formula according to which the optimal distribution of subject-related terms or keywords in a text can be determined. However, the procedure for determining this distribution is much more complex than working with keyword density, the simple frequency distribution of keywords. TF * IDF-optimized texts should present a topic in a, …

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Google Dance: The continuous dance of the search results. In order for you to get the highest quality results from your search query, search engines must update your database regularly. In the past, Google usually carried out an index update every four weeks. During the re-indexing, the search results were very conspicuous, as they wavered …

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Literally translated, information retrieval means the recovery of information. According to the definition, information retrieval refers to a process in which, based on a request for information from a large unstructured database, the information is selected that matches the request for information. Information retrieval is therefore one of the central tasks of a search engine: …

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In linguistics and linguistic computer science, stemming (reduction of the original form) is a procedure that traces different morphological variants of a word back to their common stem. The stemming enables improved and more relevant search results to be achieved. In any case, it leads to an expansion of the results. Stemming of words is also related …

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The Florida update is a change in Google’s ranking algorithm from November 2003. However, it is an unofficial name for the update. At first, this change mainly affected the English-speaking world. The non-English-speaking area, however, only touched the update at the end of January 2004 after further changes and adjustments were made. Computer experts introduced …

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By definition, cloaking can be described as an HTML technique in the area of search engine optimization. When optimizing using cloaking, the focus is on improving the ranking of a website within the results list of search engines such as Google. For this purpose, the web crawlers of the search engine are presented with different …

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The Google Possum Update was released in September 2016. As part of this update, Google focused on making the crawler process geographically more accurate in information classification for local search. Google has been releasing major updates regularly for years, thereby adapting its algorithms for evaluating websites as part of the search ranking. These updates can …

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The PageRank algorithm describes a procedure that enables websites to be rated on the basis of their incoming links. The name PageRank originally comes from Larry Page. Together with Sergei Brin, he developed this algorithm at Standford University and patented it in 1997. PageRank is an algorithm from Google. This algorithm analyzes and weights the …

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The Penguin Updates (Penguin Updates) relate to a number of algorithm changes and data refreshes from Google. The aim of the adjustments is to identify and remove webspam in the search results. Google wants to reduce the manipulation of search results and deliberately punish page optimization that does not seem natural. Spam and Penguin Update …

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The Hilltop algorithm evaluates whether your website belongs to an expert organization or person or it has authoritative content and history and calculates its relevance and trustworthiness for certain keywords. If you start a search query on Google for a specific term, the search engine first determines the expert and authority pages that are relevant …

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The use of mobile devices has been increasing for years. A mobile-optimized website is a must. Google has long responded to this: With the Mobile-First Index, Google uses information that is found on the mobile version of a website to compile the search results Definition of Mobile-First Index With the Mobile-First Index, Google is taking …

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