Hy, How do i search on google for websites that don't have the <iframe> tag in their page, or <center> tag? I tried with -"<iframe>" or -"<center>" but no result at all. Is it possible? Thanks.
i belive that you can't first- "<" google don't see symbols second- iframe is script for page and not text
yeah i don think google and tell you which site got iframe. the bot might can read or spot the iframe tag from the site source when they crawl, but i dont think they will tell or show this on the search result.
I had the same question back then but got that website http://en.wikipedia.org/wiki/IFrame that ^^ tell you about iframe
afaik, tags (except for meaningful ones, <strong>, <em>, <h1...7> etc) are discarded early in process of Googlebot activities, so perhaps there is no way altogether to access them.