Ready-made images at the sizes the platforms ask for.

link-preview 1200x630   Open Graph and X cards (og:image)
github-social-preview   1280x640, Settings > Social preview on a repository
x-header 1500x500       centred, clear of the profile picture
linkedin-banner         1584x396, centred for the same reason
eaon-avatar             the Eaon logo, square and full bleed: the platform crops it to a circle
eaon-desktop-avatar     the Eaon Desktop app icon, for a page about that app only
