Search engines are limited in web-crawling and how they interpret content. Webpages never look the same to search engines and humans alike. Making accessible and SEO friendly text helps bridge this gap optimizing for both search engines and humans alike, In this case here I wrote how does it works and how to make accessible and SEO friendly text.
This forms an excellent part in informing programmers, information architects and designers so that all parties involved in a site`s construction can plan and develop a search engine friendly site.
In order to be listed in the search engines, your most important content should be in HTML Text format. Images, java applets, flash files and other non-text content are often ignored or devalued by search engine spiders, despite considerable advances in web-crawling technology.
To ensure that the words and phrases you display to your visitors are visible to search engines place them in the HTML text on the page. More advanced options are however available for those demanding greater formatting or visual display styles: images in gif, jpg or png format can be assigned alternative attributes in HTML providing search engines a text description of the visual content.
Search boxes can be supplemented with navigation and crawl-able links. Flash or java plugin contained content can be supplemented with text on page. Video and audio content should have an accompanying transcript if the words and phrases used are meant to be indexed by the engines. By using tools like Google’s, or the mozbar you can see what elements of your content are visible and index able to the engines.
It is not only wise to check for text content but also use SEO tools to double-check that the pages you are building are visible to the engines. This applies to your images and as explained below your links.
Crawl-able link structures just as engines need to see content in order to list pages in their massive keyword-based indices, they also need to see links in order to find the content. A crawl-able link structure, one that lets their spiders browse the pathways of a website is vital in order to find all pages in a website.
Anchor text in the SEO world explains the page a link points to.
Submission required forms
In any case you require users to complete an online form, before accessing certain content, chances are search engines will never see the protected content. Forms can include anything from a password protected login to a full blown survey.
In whichever case engine spiders generally will not even make a mere attempt to submit forms and thus any content or links accessible via form will by default be invisible to the engines.
Links pointing to pages blocked by Meta robots tag or robot.txt.
Meta robots tag and robot.txt both allow site owners to restrict spider access to a page. However it is worth noting that once used, spiders might cease to crawl on your site.
Frames or Iframes
Links in both frames and I-frames are crawlable. However, both present structural issues for the engines in terms of organization and following unless you are an advanced user with a good technical understanding of how search engines index and follow links in frames, it is advisable to generally avoid them. Links on pages with many hundreds or thousands of links.
Search engines crawl so many links on a given page. This loose restriction is necessary so as to cut down on spam and conserve rankings. Pages with so many links on them are however at risk of not getting all those links crawled and indexed.
Are nofollow links bad?
Though they do not pass much value, they form a very natural part of diverse link profile. A website with a lot of inbound links will accumulate many nofollwed links, and this is generally not a bad thing.
Though high ranking search engines like Google, yahoo and Bing have admitted to not following nofollow links; essentially using nofollow links helps drop target links from the overall graph on the web. Nofollowed links carry no weight in the long run and are regarded as HTML text (as though the link did not exist). Many webmasters therefore believe that even a nofollow link from a high authority site such as Wikipedia could be interpreted as a sign of trust.
Keyword usage and Targeting
Keywords are fundamental to the search process and they lay strong building blocks for the same. As engines crawl and index the contents of pages around the web, they keep track of those pages in keyword-based indices. Thus, rather than storing a lot of web pages they do so in smaller databases, each centered on particular keyword, term or phrase.
This explains how search engines manage to retrieve information for you in fractions of seconds.
Your search intent and interaction is centered on keyword domination. When a search is performed, the engine matches pages to retrieve based on words entered into the search box. Other data such as the order of the words, spelling, punctuation and capitalization provide only additional information that the engines use to help retrieve the right pages and rank them.
To help accomplish this, search engines measure the way keywords are used on pages to help determine the relevance of a particular document to a query.
One of the best ways to optimize a page for better rankings is to ensure keywords are prominently used in titles, text and metadata. Generally the more specific your keywords, the better your chances of ranking based on less competition.
When with your own site, use the keyword in the title tag at least once. Try to keep the keyword as close to the beginning of the title tag as possible.
Once permanently near the top of the page: at least 2-3 times, including variations, in the body copy of the page. Sometimes a few more are necessary if the text content is in plenty.