Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pdf-online.lalibre.be can be misinterpreted by Google and other search engines.
Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in or tags either. Our system also found out that Pdf-online.lalibre.be main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.