While practicing SEO, you need to know about its working as it is very important. One of the important parts of this is distinguishing between which kind of content of the web page can be read or not. After you have clear cut notion on this issue, you can very well optimize your website’s pages both for visitors who are reading as well as for crawlers and spiders’ reading purpose.

Search engines do make use of their software program for crawling and indexing websites.  Such programs may only analyze the raw HTML code of a web page. While going through raw HTML code, the HTML tags will be ignored and will be only interested in the HTML text of the page. Also, some other elements within the header section are read. They comprise of meta tags and page title. The page title represents one of the crucial factors in case the crawlers read as well as index the page. Within the search engine result pages, the very page title will be listed as the search results for the purpose of search query. Some of the other meta tags that need to be usually used by web masters include description tag and keyword tag. These days, Google doesn’t bother to read the very information in the keyword tag anymore. But Bing still do it. Thus, we can keep it safe for Bing’s spiders to crawl on. On the other hand, description tag is as important as page title as in general the spiders or crawlers do make use of description tag’s information for describing the search result. Thus, an excellent description may help to drive more traffic to your website. You need to take care of the description in a careful manner. Moreover, there are two attributes that are recommended for existence. These are:- ‘alt’ attribute and ‘ nonscript tag.’

There also exists content that the search engines that cannot be read on your pages. The very first is content of the images on your website. The crawlers may read all technical factors of an image like dimension, format, size etc; however, they don’t have knowledge about what the image is. It is due to this reason that you have to add ‘alt’ attribute to your website so that the spiders can understand what your image is. Some other things in this part represent flash content, video, audio files etc. Frames as well as iFrames may be read by search engines but they can recognize information inside the frames of iFrames from any other publisher; therefore the content will not be indexed.