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Googlebot
Googlebot is the web crawler software used by Google that collects documents from the web to build a searchable index for the Google Search engine. This name is actually used to refer to two different types of web crawlers: a desktop crawler (to simulate desktop users) and a mobile crawler (to simulate a mobile user). Behavior A website will probably be crawled by both Googlebot Desktop and Googlebot Mobile. However starting from September 2020, all sites were switched to mobile-first indexing, meaning Google is crawling the web using a smartphone Googlebot. The subtype of Googlebot can be identified by looking at the user agent string in the request. However, both crawler types obey the same product token (useent token) in robots.txt, and so a developer cannot selectively target either Googlebot mobile or Googlebot desktop using robots.txt. Google provides various methods that enable website owners to manage the content displayed in Google's search results. If a webmaster c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Google Search Console
Google Search Console (formerly Google Webmaster Tools) is a web service by Google which allows webmasters to check indexing status, search queries, crawling errors and search engine optimization, optimize visibility of their websites. Until 20 May 2015, the service was called Google Webmaster Tools. In January 2018, Google introduced a new version of the search console, with changes to the user interface. In September 2019, old Search Console reports, including the home and dashboard pages, were removed. Features The service includes tools that let webmasters * Submit and check a sitemap. * Check the crawl rate, and view statistics about when Googlebot accesses a particular site. * Receive alerts when Google encounters indexing, spam, or other issues on your site. * Show you which sites link to your website. * Write and check a robots.txt file to help discover pages that are blocked in robots.txt accidentally. * List internal and external pages that link to the website. * Get ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robots
" \n\n\n\n\n\n\nrobots.txt is the filename used for implementing the Robots Exclusion Protocol, a standard used by websites to indicate to visiting web crawlers and other web robots which portions of the website they are allowed to visit.\n\nThe standard, developed in 1994, relies on voluntary compliance. Malicious bots can use the file as a directory of which pages to visit, though standards bodies discourage countering this with security through obscurity. Some archival sites ignore robots.txt. The standard was used in the 1990s to mitigate server overload. In the 2020s, websites began denying bots that collect information for generative artificial intelligence.\n\nThe \"robots.txt\" file can be used in conjunction with sitemaps, another robot inclusion standard for websites.\n History\nThe standard was proposed by Martijn Koster, when working for Nexor in February 1994 on the ''www-talk'' mailing list, the main communication channel for WWW-related activities at the time. Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Crawler
Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web and that is typically operated by search engines for the purpose of Web indexing (''web spidering''). Web search engines and some other websites use Web crawling or spidering software to update their web content or indices of other sites' web content. Web crawlers copy pages for processing by a search engine, which Index (search engine), indexes the downloaded pages so that users can search more efficiently. Crawlers consume resources on visited systems and often visit sites unprompted. Issues of schedule, load, and "politeness" come into play when large collections of pages are accessed. Mechanisms exist for public sites not wishing to be crawled to make this known to the crawling agent. For example, including a robots.txt file can request Software agent, bots to index only parts of a website, or nothing at all. The number of In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Google Search
Google Search (also known simply as Google or Google.com) is a search engine operated by Google. It allows users to search for information on the World Wide Web, Web by entering keywords or phrases. Google Search uses algorithms to analyze and rank websites based on their relevance to the search query. It is the most popular search engine worldwide. Google Search is the List of most-visited websites, most-visited website in the world. As of 2025, Google Search has a 90% share of the global search engine market. Approximately 24.84% of Google's monthly global traffic comes from the United States, 5.51% from India, 4.7% from Brazil, 3.78% from the United Kingdom and 5.28% from Japan according to data provided by Similarweb. The order of search results returned by Google is based, in part, on a priority rank system called "PageRank". Google Search also provides many different options for customized searches, using symbols to include, exclude, specify or require certain search be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
User-agent
In computing, the User-Agent header is an HTTP header intended to identify the user agent responsible for making a given HTTP request. Whereas the character sequence User-Agent comprises the name of the header itself, the header value that a given user agent uses to identify itself is colloquially known as its user agent string. The user agent for the operator of a computer used to access the Web has encoded within the rules that govern its behavior the knowledge of how to negotiate its half of a request-response transaction; the user agent thus plays the role of the client in a client–server system. Often considered useful in networks is the ability to identify and distinguish the software facilitating a network session. For this reason, the User-Agent HTTP header exists to identify the client software to the responding server. Use in client requests When a software agent operates in a network protocol, it often identifies itself, its application type, operating system, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contextual Advertising
Contextual advertising (also called contextual targeting) is a form of targeted digital advertising. Contextual advertising is also called "In-Text" advertising or "In-Context" technology. Contextual targeting involves the use of linguistic factors to control the placement of advertising material. The advertisements are selected and delivered by automated systems, taking into consideration the context of a user's search or browsing behavior. As advertisers and marketers increasingly prioritize brand safety and suitability, contextual advertising has emerged as a crucial aspect of safeguarding brand reputation and value. Contextual ads are commonly perceived as less irritating than traditional advertising, therefore influencing users more effectively. It reflects user interests, thus increasing the chance of receiving a response. How it works A contextual advertising system scans the content of a website for specific keywords and phrases and then displays advertisements based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Google
Google LLC (, ) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial intelligence (AI). It has been referred to as "the most powerful company in the world" by the BBC and is one of the world's List of most valuable brands, most valuable brands. Google's parent company, Alphabet Inc., is one of the five Big Tech companies alongside Amazon (company), Amazon, Apple Inc., Apple, Meta Platforms, Meta, and Microsoft. Google was founded on September 4, 1998, by American computer scientists Larry Page and Sergey Brin. Together, they own about 14% of its publicly listed shares and control 56% of its stockholder voting power through super-voting stock. The company went public company, public via an initial public offering (IPO) in 2004. In 2015, Google was reorganized as a wholly owned subsidiary of Alphabet Inc. Go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Server Directory Index
When an HTTP client (generally a web browser) requests a URL that points to a directory structure instead of an actual web page within the directory structure, the web server will generally serve a default page, which is often referred to as a main or "index" page. A common filename for such a page is index.html, but most modern HTTP servers offer a configurable list of filenames that the server can use as an index. If a server is configured to support server-side scripting, the list will usually include entries allowing dynamic content to be used as the index page (e.g. index. cgi, index. pl, index.php, index. shtml, index. jsp, default. asp) even though it may be more appropriate to still specify the HTML output (index.html.php or index.html.aspx), as this should not be taken for granted. An example is the popular open source web server Apache, where the list of filenames is controlled by the DirectoryIndex directive in the main server configuration file or in the configuration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
