diff --git a/web/middleware.ts b/web/middleware.ts
index ac016945fd..c5c6938113 100644
--- a/web/middleware.ts
+++ b/web/middleware.ts
@@ -37,7 +37,7 @@ export function middleware(request: NextRequest) {
     style-src 'self' 'unsafe-inline' ${scheme_source} ${whiteList};
     worker-src 'self' ${scheme_source} ${csp} ${whiteList};
     media-src 'self' ${scheme_source} ${csp} ${whiteList};
-    img-src * data:;
+    img-src * data: blob:;
     font-src 'self';
     object-src 'none';
     base-uri 'self';