In the past, search engines found it hard to read any links and information that did not appear in HTML format within a page’s ASCII text file. Google Image Search, is continuing to improve and this is why it is becoming integral to the search engine’s algorithms.
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AJAX changes to content on a page without changing the page’s URL. As a result, search engines are unable to index this. Google had developed how to crawl AJAX-enhanced pages in 2009, but ceased recommending the utilization of AJAX in 2015, although tests have shown that Google remains ready to crawl these pages. so as to be sure that your site is going to be comprehensively crawled while still featuring AJAX, your agency is going to be ready to build new URLs for the different versions of your content, and conduct standard redirects to them from other areas of the location using standard HTML.
Search engines are unable to ‘guess’ at the content contained in Flash, and as a result, the text contained in Flash animations won’t rank in Google Search Engine results pages (SERPS).
As search technology continues to evolve, search spiders are starting to identify a number of the content contained in videos and pictures. Optical Character Recognition (OCR) is already considerably live, allowing spiders to read images contained in un-spiderable content—to an extent.