Site map

A site map (or sitemap) is a list of pages of a web site.

There are three primary kinds of site map:

  • Site maps used during the planning of a Web site by its designers.
  • Human-visible listings, typically hierarchical, of the pages on a site.
  • Structured listings intended for web crawlers such as search engines.

Types of site maps

Main Page Usability
A site map of what links from the English Wikipedia's Main Page.
Sitemap google
Sitemap of Google

Sitemaps may be addressed to users or to software. Many sites have user-visible sitemaps which present a systematic view, typically hierarchical, of the site. These are intended to help visitors find specific pages, and can also be used by crawlers. Alphabetically organized site maps, sometimes called site indexes, are a different approach.

For use by search engines and other crawlers, there is a structured format, the XML Sitemap, which lists the pages in a site, their relative importance, and how often they are updated. This is pointed to from the robots.txt file and is typically called sitemap.xml. The structured format is particularly important for web sites which include pages that are not accessible through links from other pages, but only through the site's search tools or by dynamic construction of URLs in Javascript or Adobe Flash.

They also act as a navigation aid [1] by providing an overview of a site's content at a single glance.

XML sitemaps

Google introduced the Sitemaps protocol so web developers can publish lists of links from across their sites. The basic premise is that some sites have a large number of dynamic pages that are only available through the use of forms and user entries. The Sitemap files contains URLs to these pages so that web crawlers can find them. Bing, Google, Yahoo and Ask now jointly support the Sitemaps protocol.

Since the major search engines use the same protocol,[2] having a Sitemap lets them have the updated page information. Sitemaps do not guarantee all links will be crawled, and being crawled does not guarantee indexing.[3] Google Webmaster Tools allow a website owner to upload a sitemap that Google will crawl, or they can accomplish the same thing with the robots.txt file.[4]

XML Sitemaps have replaced the older method of "submitting to search engines" by filling out a form on the search engine's submission page. Now web developers submit a Sitemap directly, or wait for search engines to find it. Regularly submitting an updated sitemap when new pages are published may allow search engines to find and index those pages more quickly than it would by finding the pages on its own.[5]

Benefits of XML sitemaps to search-optimize Flash sites

Below is an example of a validated XML sitemap for a simple three page web site. Sitemaps are a useful tool for making sites built in Flash and other non-html languages searchable. If a website's navigation is built with Flash, an automated search program would probably only find the initial homepage; subsequent pages are unlikely to be found without an XML sitemap.

XML sitemap example:

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>http://www.example.net/?id=who</loc>
    <lastmod>2009-09-22</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>http://www.example.net/?id=what</loc>
    <lastmod>2009-09-22</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>http://www.example.net/?id=how</loc>
    <lastmod>2009-09-22</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
</urlset>

See also

References

  1. ^ Site Map Usability Jakob Nielsen's Alertbox, August 12, 2008
  2. ^ "Google, Yahoo!, Microsoft Standardize Against Google Sitemap Protocol". Oreilly. Retrieved 2012-07-24.
  3. ^ Joint announcement from Google, Yahoo, Bing supporting Sitemaps
  4. ^ "Submitting Sitemaps". Google. Retrieved 2012-07-06.
  5. ^ Foster, Wes (April 5, 2017). "What is a Sitemap?". WESFED.

External links

Battleship, West Virginia

Battleship is an unincorporated community located in Raleigh County, West Virginia. Battleship has been known by two other names: Ralco and West Whitby. The community was part of the Winding Gulf Coalfield.

Begoro

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California High-Speed Rail

California High-Speed Rail (abbreviated CAHSR or CHSR) is a high-speed rail system under construction in the U.S. state of California. It is projected to connect the Anaheim Regional Transportation Intermodal Center in Anaheim and Union Station in Downtown Los Angeles with the Salesforce Transit Center in San Francisco via the Central Valley, providing a one-seat ride between Union Station and San Francisco in 2 hours and 40 minutes. Future extensions are planned to connect to stations to San Diego County via the Inland Empire, as well as to Sacramento.

CAHSR plans to operate on dedicated, grade-separated tracks for the entirety of its route between San Jose and Burbank with speeds of up to 220 miles per hour (350 km/h), with early ridership projections for the San Francisco to Los Angeles leg at 28.4 million per year. The San Francisco–San Jose and Los Angeles–Anaheim sections will be shared with local trains in a "blended system". The project is owned and managed by the state of California through the California High-Speed Rail Authority (CHSRA). The Bakersfield to Los Angeles segment would be the first instance of a direct passenger train route between the cities since the termination of the Southern Pacific Railroad's San Joaquin Daylight in 1971.

The CAHSRA was established by an act of the California State Legislature and tasked with presenting a high-speed rail plan to the voters. This plan, Proposition 1A, was presented to and approved by voters in 2008 and included a $9-billion bond to begin construction on the initial leg of the network. Construction began in 2015 after a groundbreaking ceremony in Fresno. The ARRA funding agreement, which CAHSR intends to utilize to build the Central Valley segment, specifies a completion date of December 31, 2022, and the 2018 draft Business Plan calls for opening the initial operating segment between San Jose Diridon station and Bakersfield in 2027. The complete first phase between San Francisco and Anaheim is expected in 2033. Phase 2 extensions to Sacramento and San Diego are still in the planning stages.

On February 12, 2019, Governor Gavin Newsom in his first State of the State address announced that, while work would continue on the 171-mile (275 km) Central Valley segment from Bakersfield to Merced, the rest of the system would be indefinitely postponed, citing cost overruns and delays. Project costs have escalated significantly from an initial estimate of $33.6 billion in 2008 for the Anaheim to San Francisco section according to the 2008 business plan, and a $40 billion total figure given to voters whose approval was sought in 2008. The 2008 business plan proposed a 2028 completion date for Phase 1 and a one-way fare of $55 from Los Angeles to San Francisco. In 2012 the Authority re-estimated the project's cost at $53.4 billion (2011$) or $68.4 billion (YOE) In 2018 the Authority pushed estimated costs to between $63.2 billion and $98.1 billion (YOE) and delayed initial service to 2029, with Los Angeles to San Francisco service in 2033. However, environment reviews for the entire San Francisco to Anaheim route would continue. The cost for Bakersfield to Merced is $10.6 billion.

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HTTP 404

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Sitemaps

The Sitemaps protocol allows a webmaster to inform search engines about URLs on a website that are available for crawling. A Sitemap is an XML file that lists the URLs for a site. It allows webmasters to include additional information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. This allows search engines to crawl the site more efficiently and to find URLs that may be isolated from rest of the site's content. The sitemaps protocol is a URL inclusion protocol and complements robots.txt, a URL exclusion protocol.

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Web page

A web page (also written as webpage) is a document that is suitable to act as a web resource on the World Wide Web. When accessed by a web browser it may be displayed as a web page on a monitor or mobile device.

The term web page usually refers to what is visible, but may also refer to the contents of the computer file itself, which is usually a text file containing hypertext written in HTML or a comparable markup language. Typical web pages provide hypertext for browsing to other web pages via hyperlinks, often referred to as links. Web browsers will frequently have to access multiple web resource elements, such as reading style sheets, scripts, and images, while presenting each web page.

On a network, a web browser can retrieve a web page from a remote web server. The web server may restrict access to a private network such as a corporate intranet. The web browser uses the Hypertext Transfer Protocol (HTTP) to make such requests to the web server.

A static web page is delivered exactly as stored, as web content in the web server's file system. In contrast, a dynamic web page is generated by a web application, usually driven by server-side software. Dynamic web pages help the browser (the client) to enhance the web page through user input to the server.

Website

A website or Web site is a collection of related network web resources, such as web pages, multimedia content, which are typically identified with a common domain name, and published on at least one web server. Notable examples are wikipedia.org, google.com, and amazon.com.

Websites can be accessed via a public Internet Protocol (IP) network, such as the Internet, or a private local area network (LAN), by a uniform resource locator (URL) that identifies the site.

Websites can have many functions and can be used in various fashions; a website can be a personal website, a corporate website for a company, a government website, an organization website, etc. Websites are typically dedicated to a particular topic or purpose, ranging from entertainment and social networking to providing news and education. All publicly accessible websites collectively constitute the World Wide Web, while private websites, such as a company's website for its employees, are typically part of an intranet.

Web pages, which are the building blocks of websites, are documents, typically composed in plain text interspersed with formatting instructions of Hypertext Markup Language (HTML, XHTML). They may incorporate elements from other websites with suitable markup anchors. Web pages are accessed and transported with the Hypertext Transfer Protocol (HTTP), which may optionally employ encryption (HTTP Secure, HTTPS) to provide security and privacy for the user. The user's application, often a web browser, renders the page content according to its HTML markup instructions onto a display terminal.

Hyperlinking between web pages conveys to the reader the site structure and guides the navigation of the site, which often starts with a home page containing a directory of the site web content. Some websites require user registration or subscription to access content. Examples of subscription websites include many business sites, news websites, academic journal websites, gaming websites, file-sharing websites, message boards, web-based email, social networking websites, websites providing real-time stock market data, as well as sites providing various other services. End users can access websites on a range of devices, including desktop and laptop computers, tablet computers, smartphones and smart TVs.

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