The Login with U button

Use the official artwork, never a rebuild. Hotlink the SVGs (theme-appropriate), keep clear space around the button equal to half its height, and do not stretch, recolor, or restyle it.

Usage

<a href="YOUR_AUTHORIZE_URL">
  <img src="https://cdn.u.cash/signin/2/signin-dark.svg"
       alt="Login with U" width="190" height="40">
</a>

Guidelines

• Dark artwork on light backgrounds, light artwork on dark backgrounds; the icon-only mark when space is tight.
• Minimum size 152x32. Do not animate or add effects.
• Say "Login with U" in surrounding copy; do not imply U.CASH endorses your app beyond authentication.
• The button always triggers the authorize flow - never use it as decoration or a fake input.