Remove the sub key line. I'm not sure it's that useful, and it might confuse people having two key IDs shown.
Escape < and >.
Make key format more standard. I have some non-standard options in my GPG config. This makes it look like it does by default, which should be less surprising for people.
Update PGP key information. There doesn't seem to be a huge benefit showing the whole armored key directly on the webpage. Instead show the key details, including the fingerprint, and provide a download for the armored key.
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