Schema or structured information is usually a semantic vocabulary of tags which you could add into a web site’s HTML to aid crawlers have an understanding of the web page’s information. Online search engine firms developed it as a unified language for structured website details. 사이트의 여러 부분을 최적화할 때 https://cesarnxgnu.dm-blog.com/28813138/pdf-ocr-optical-character-recognition-no-further-a-mystery