diff --git a/src/plugins/themeAttributes/index.ts b/src/plugins/themeAttributes/index.ts
index b8084454..2a613967 100644
--- a/src/plugins/themeAttributes/index.ts
+++ b/src/plugins/themeAttributes/index.ts
@@ -55,6 +55,8 @@ export default definePlugin({
     ],
 
     getAvatarStyles(src: string) {
+        if (src.startsWith("data:")) return {};
+
         return Object.fromEntries(
             [128, 256, 512, 1024, 2048, 4096].map(size => [
                 `--avatar-url-${size}`,