The importance of alt-in place of attributes

Absrtact: alt-Instead of attributes, used to describe the picture on the page, the cursor displayed in the picture when the prompt is implemented by the label, such as: the RSS icon on the right side of this page. From the SEO and user experience, alt-is necessary to replace the attribute, its importance is mainly

alt-instead of attributes, used to describe the picture on the Web page, the cursor displayed in the picture when the prompt is used to implement the label, such as: the right side of this page, "RSS" icon.

From the SEO and user experience, alt-is necessary to replace the attribute, its importance mainly include:

Web content relevance is the premise of keyword optimization, search engine that the page should be related to the theme of the page. Conversely, when the search engine to judge the keywords of the Web page, the image of the alt-in place of attributes is a trustworthy reference point. So, don't forget to add the keyword of the page in the alt-of the picture instead of the attribute. Sometimes the pictures on the Web page can't be displayed because of some reasons, such as using screen readers, low bandwidth, network blocking, and so on. Descriptive alt-instead of attributes can tell the user the content of the location to add the user experience. Regular websites should do the same. Sometimes, if there is no alt-in place of the attribute, it will cause the user to not understand what the picture represents and why it is placed on this page.

The alt-of substitution attribute

The worst (but most common):

<img src= "nt12343.jpg" alt= "/>

Slightly better (but did not tell the user the specific content):

<img src= "nt12343.jpg" alt= "Baby"/>

Best (simple description of picture content and nested keywords):

<img src= "nt12343.jpg" alt= "Baby cake for two birthday" >

To avoid (may result in being considered a spam spam site):

<img src= "nt12343.jpg" alt= "Baby sweetheart cake cake birthday baby birthday Birthday"/>