diff --git a/src/server/web/url-preview.ts b/src/server/web/url-preview.ts
index 041c475a4..cd53837a2 100644
--- a/src/server/web/url-preview.ts
+++ b/src/server/web/url-preview.ts
@@ -14,7 +14,7 @@ module.exports = async (ctx: Koa.Context) => {
 
 function wrap(url: string): string {
 	return url != null
-		? url.startsWith('https://')
+		? url.startsWith('https://') || url.startsWith('data:')
 			? url
 			: `https://images.weserv.nl/?url=${encodeURIComponent(url.replace(/^http:\/\//, ''))}`
 		: null;