style.css

/* Default (light mode) */
a[href^="http"]:not([href="https://docs.usepylon.com/pylon-docs"])::after
{
  margin-left: 4px;
  position: relative;
  top: 1px;
  content: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNiIgaGVpZ2h0PSIxNiIgZmlsbD0iIzU5NTQ1NCIgdmlld0JveD0iMCAwIDI1NiAyNTYiPjxwYXRoIGQ9Ik0yMDQsNjRWMTY4YTEyLDEyLDAsMCwxLTI0LDBWOTNMNzIuNDksMjAwLjQ5YTEyLDEyLDAsMCwxLTE3LTE3TDE2Myw3Nkg4OGExMiwxMiwwLDAsMSwwLTI0SDE5MkExMiwxMiwwLDAsMSwyMDQsNjRaIj48L3BhdGg+PC9zdmc+");
}

/* Dark mode */
.dark a[href^="http"]:not([href="https://docs.usepylon.com/pylon-docs"])::after
{
  content: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNiIgaGVpZ2h0PSIxNiIgZmlsbD0iI2YwZjBmMCIgdmlld0JveD0iMCAwIDI1NiAyNTYiPjxwYXRoIGQ9Ik0yMDQsNjRWMTY4YTEyLDEyLDAsMCwxLTI0LDBWOTNMNzIuNDksMjAwLjQ5YTEyLDEyLDAsMCwxLTE3LTE3TDE2Myw3Nkg4OGExMiwxMiwwLDAsMSwwLTI0SDE5MkExMiwxMiwwLDAsMSwyMDQsNjRaIj48L3BhdGg+PC9zdmc+");
}

/* reset for other places */
#footer a[href^="http"]::after,
#navbar a[href^="http"]::after,
#sidebar-content a[href^="http"]::after,
a.no_external_icon[href^="http"]::after,
a.card[href^="http"]::after {
  content: none !important;
}