After analyze a example link that can preview in Facebook & Twitter and search Google, I found it just need to add some meta on blog post’s html header. One guy give an example code below.
His blog post about this solution: https://vietlq.github.io/2017/04/30/access-hugo-page-variables/His github gist about this code:
https://gist.github.com/vietlq/d1c7ecfb20ce7beac4a7f4df746c797cReference: <a rel=“noreferrer noopener” aria-label=“Reference: https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/summary.html https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/markup.html
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