Add Open Graph tags
Now that the profile page is being rendered server-side Keyoxide profile page could get some more tags that are used by various tools to provide site previews:
Currently I'm thinking of the following https://ogp.me/ tags:
<meta property="og:image" content="https://gravatar-link-of-users" /> <meta property="og:type" content="profile" />
It would be good if the title and description were also rendered server-side.
There's also a couple of metadata tags to make things look good on Twitter, that are common good-practice to supply along with OG stuff.
Another consideration is the image size that will be displayed. In the example PNG @wiktor provided your avatar will look fine, but when sharing on a large Twitter card or on e.g. LinkedIn the photograph will be huge :)
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