Meta element | Solutional Webdesign Antwerpen

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Meta elements are a crucial part of HTML^[6] coding that provide specific information about a web page. These elements are used to specify page description, character encoding, keywords, and other metadados^[4] not visible to users but significant for search engines. They play a vital role in Otimização para motores de busca^[1] (SEO) as they help categorize pages and are supported by major search engines like Google^[5]. However, their value in SEO is a subject of debate. Meta elements can also control search engine indexing^[2] through the robots attribute. Notably, they can serve as alternatives to HTTP headers. Other uses include redirecting users to different locations and providing information on page expiration dates. Despite their versatility, meta elements’ usage must comply with accessibility guidelines for optimal user experience^[3].

Definições de termos

1. ↑ Otimização de motores de busca ( Otimização para motores de busca ) A otimização dos motores de busca, normalmente designada por SEO, é uma estratégia de marketing digital fundamental. Com origem em meados dos anos 90, a SEO consiste em melhorar os sítios Web para obter classificações mais elevadas nas páginas de resultados dos motores de busca. Este processo é essencial para aumentar o tráfego na Web e converter visitantes em clientes. A SEO utiliza várias técnicas, incluindo a conceção de páginas, a otimização de palavras-chave e a atualização de conteúdos, para melhorar a visibilidade de um sítio Web. Envolve também a utilização de ferramentas para monitorizar e adaptar-se às actualizações dos motores de busca. As práticas de SEO variam entre os métodos éticos de "chapéu branco" e as técnicas reprovadas de "chapéu preto", sendo que o "chapéu cinzento" se situa entre ambos. Embora a SEO não seja adequada para todos os sítios Web, a sua eficácia nas campanhas de marketing na Internet não pode ser subestimada. As tendências recentes do sector, como a utilização da Web móvel que ultrapassa a utilização do computador, realçam a paisagem em evolução da SEO.

2. ↑ search engine indexing. Search engine indexing is a crucial component in the functioning of search engines. It involves storing an index of all documents in a database, allowing for quick and efficient retrieval of relevant documents. This process saves significant time as it prevents the need to scan every document in the corpus each time a query is made. However, it does require additional storage space. The design of the index, including how data enters the index and how it's stored, impacts its size and lookup speed. Various data structures can be used for indexing, such as a suffix tree, inverted index, citation index, -gram index, and document-term matrix. Parallel computing presents challenges in managing processes, handling race conditions and maintaining a synchronized architecture. The inverted index, in particular, is key to search engine optimization, as it stores occurrences of each search criterion, supports phrase searching and aids in ranking document relevance.

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Meta-elemento (Wikipédia)

Meta elements are tags used in HTML e XHTML documents to provide structured metadados about a Página Web. They are part of a web page's head section. Multiple Meta elements with different attributes can be used on the same page. Meta elements can be used to specify page description, keywords and any other metadados not provided through the other head elements and attributes.

The meta element has two uses: either to emulate the use of an HTTP response header field, or to embed additional metadata within the HTML document.

With HTML up to and including HTML 4.01 and XHTML, there were four valid attributes: content, http-equiv, name e scheme. Under HTML 5, charset has been added and scheme has been removed. http-equiv is used to emulate an HTTP header, and name to embed metadata. The value of the statement, in either case, is contained in the content attribute, which is the only required attribute unless charset is given. charset is used to indicate the character set of the document, and is available in HTML5.

Such elements must be placed as tags in the head section of an HTML ou XHTML document.

Significados alternativos:

Meta-elemento
The Meta Element is a critical component of HTML (Hyper Text Markup Language) that plays a significant role in the structure and content of a webpage. It offers information to search engines about the content of the webpage, helping them categorize pages and potentially affecting search engine optimization (SEO). Meta elements can specify HTTP headers for content delivery, describe the page's contents, and support ranking by search engines like Google. They also include various attributes such as title, keywords, description, language, and robots, each serving a unique purpose. Despite their importance, the role of meta tags in SEO is not fully clear, and they can be manipulated, leading to penalties from search engines. Alternatives to Meta Elements exist, such as HTML elements like TITLE, ADDRESS, INS, DEL and HTML5's Semantic web.

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