Data Markup
Pls check this developers.google.com
Some Templates
All templates: developers.google.com
useFull ones are fact check
&
how to tell spiders not to crawl this page?
<meta name="ROBOTS" content="NOINDEX, NOFOLLOW" />
canonical urls
Some situations are like urls are competing against each other whereas they presents the same file.
<link
rel="canonical"
href="https://m.ixigua.com/xigua_hot_spot/detail/7101281806032313356"
/>