cpp-httplib/docs/favicon.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
  <rect width="32" height="32" rx="6" fill="#4a9eff"/>
  <text x="16" y="22" font-family="-apple-system,BlinkMacSystemFont,sans-serif" font-size="18" font-weight="bold" text-anchor="middle" fill="white">D</text>
</svg>