diff --git a/README.md b/README.md
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+# Sign-in preview
+
+A disposable repository for checking AT Protocol sign-in, profile links, and avatars.
+
+![Snowflake](preview.svg)
diff --git a/preview.svg b/preview.svg
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+<svg xmlns="http://www.w3.org/2000/svg" width="160" height="80" viewBox="0 0 160 80"><rect width="160" height="80" rx="12" fill="#ebe8ff"/><path d="M80 14v52M57 27l46 26M57 53l46-26" stroke="#6050a0" stroke-width="5" stroke-linecap="round"/></svg>