How to optimize a picture

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall

A real site is certainly not only text without pictures, but many of us know that search engines do not know the picture, then how do we optimize the picture?

1, first of all, we face the first question is how to the search engine to explain the content of the picture, the author of the optimization of a high and low temperature test box station as an example, to explain how to tell the search engine I inserted the picture is what? This Website "Technical support" has an article " Low-temperature test chamber rise and drop rate test method ", now the picture is the content of this document.

When we operate in the background of the website, fill in the body content, need to insert the picture, click on the image button, open the "Image Properties" dialog box, click the Upload button, select the image to upload, as shown in Figure 1, in the next open column, there is a text box, next to "replace text" a few words, as shown in Figure 2, In which you can fill in the description of the picture, if you can take the keyword that is better, of course, the author of this article in the replacement text did not add keywords, this is because from the user to read, there is no need to add, do not optimize for optimization.

Figure 1

Figure 2

The meaning conveyed by the picture itself is expressed by "alternate text", which is tantamount to telling the search engine what the picture says, and you can look at Figure 3, which is the source code that describes the picture.

Figure 3

2, graphics and text mixed row of the document is of course more popular with users and search engines, however, if the picture is too large, will directly delay the page load time, when it has significantly affected the user's reading, the user and the search engine may leave your site, of course, if your site is based on the main picture of the natural exception, But such a site, after all, is a minority, so we should try to avoid using large pictures, not to create a pure image page.

Web page image format is mainly GIF, JPG, PNG Three, commonly used in the first two, GIF for line and enterprise identification, JPG applicable to the format of the photo elements, which depends on the quality of the picture itself needs to be determined, if the picture to be very clear, with high resolution, it is best to choose JPG format.

To sum up, the Site Image optimization optimization of the core has two points: to increase the search engine text description, if possible, with the words of the keyword; while maintaining image quality, compress the file size of the image as much as possible. This article by (http://www.shiyanxiang.org.cn/) original release!