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Otimizando as Imagens para os mecanismos de busca no Blogger

31 comentários
Blogger SEO

As imagens são elementos essenciais para os blogs, pois ilustram as páginas e facilitam a navegação. No entanto, elas podem ser ignoradas pelos robôs de indexação se não forem otimizadas. E não estou falando da otimização para que elas carreguem mais rapidamente e sim da otimização para buscas (SEO).

Texto Alternativo

Os mecanismos de busca conseguem ler apenas os elementos baseados em texto, ou seja, não podem identificar imagens (e outros elementos, como Flash e vídeos) na página. No entanto, as imagens podem conter um texto alternativo, que é exibido quando a imagem não puder ser carregada, quando o usuário desativar a exibição de imagens ou quando estiver usando um navegador de texto. Para adicionar o texto alternativo à uma imagem no editor do Blogger, basta acessar o código HTML da imagem e deixá-lo mais ou menos assim:

<img src=”http://imagem.png” alt=”Texto alternativo />

Quando os robôs dos mecanismos de busca estiverem indexando sua página, vão poder identificar as imagens com texto alternativo, e possivelmente, até incluí-las no índice da pesquisa de imagens. Mas não se esqueça: você deverá definir como texto alternativo uma pequena frase que diga o que é aquela imagem.

A Camada do Título

Assim como os links, imagens também podem receber títulos. Eles funcionam como uma camada extra de descrição e aparecem sempre quando o usuário posiciona o mouse sobre a imagem (como uma “dica de tela”). Para adicionar um título à uma imagem, basta acrescentar o código em laranja:

<img src=”http://imagem.png” alt=”Texto alternativo” title=”Título da imagem />

Você poderá definir como título, uma pequena frase que diga mais sobre aquela imagem. Tanto Texto alternativo quanto Título podem (e devem, na medida do possível) ser aplicados nas imagens presentes no template e postagens.

Dê preferência aos textos

Existem blogs que utilizam imagens no lugar de texto, como em banners informativos, subtítulos ou como partes do template. Com a atribuição de Texto alternativo e Títulos, essas imagens podem ser lidas pelos mecanismos de busca, mas isso não as torna mais eficientes que utilizar texto. Muitas vezes você pode atingir o visual desejado apenas usando CSS, sem precisar substituir tudo por uma imagem. O mesmo vale para elementos baseados em Flash e outros Plug-ins.

Comentários (31)
iBlog Brasil 30/08/2009 20:10

Mais uma dica daquelas...parabéns!

Bruno 31/08/2009 13:18

Parabens pelo blog e muito obrigado pelas dicas!

Rendson Campos 31/08/2009 15:53

Tem que virar e-book

sequelanet.com.br 02/09/2009 02:01

Nossa velho teu blog é 10! Muito boa essa dicas de SEO! Tou acompanhando!
abraços

Arierom Salik 02/09/2009 17:17

Sérgio, é válido para quem usa o Writer para editar? E mais uma se possível...
Quando converto jpg em png este fica maior;
imagem.jpg: 120X121 = 6,29 KB >Format Factory > imagem.png: 120X121 = 28,4 Kb.

Anônimo 04/09/2009 17:55

Bruno em 1° isso ñ é blog é site
em 2° esse foi o melhor site de dicas que eu já vi

Administrador 12/09/2009 22:59

Sérgio,

Conheci teu blog hoje por indicação de um colega blogueiro e tou impressionado com a qualidade de seus posts. Você escreve de forma simples, sucinta e direta, sem cansar o leitor. Os conteúdos são extremamente relevantes.
Parabéns!
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Fabrício Araújo 14/09/2009 20:20

Sérgio, você está certíssimo, existem muitas pessoas que nunca ouviram falar sobre esses atributos para imagens, quem usa um editor de HTML nem precisa se preocupar muito porque com alguns cliques isso pode ser feito, mesmo sem ter conhecimento em HTML.

Parabéns (de novo).

Abraço.

iceBreakerSérgio Estrella29/09/2009 17:24

Arierom Salik,
É válido pra quem usa Live Writer sim. As dicas valem independente do editor utilizado.

Sobre a conversão de imagens, isso varia de imagem pra imagem. Se for uma foto, ela ficará melhor em JPG; se for um botão ou banner, o melhor é PNG. Para mais informações, veja o link indicado na introdução do artigo.

PAM Dowloads 29/12/2009 15:51

hj por uma pesquisa no google achei seu blog...seu blog é nota 10 tem varias dicas excenciais...e ja segui varias delas...continue assim...falow
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