Google’s John Mueller said on Twitter some time ago that the trailing slash after the domain name is an implied canonical. He said “The trailing slash after a domain name is always there, even if it’s not shown.” “It’s always implied for canonicalization,” he added.

Here are the tweets about this:

So if you see https://www.seroundtable.com it really means https://www.seroundtable.com/

Forum discussion at Twitter.