diff --git a/web/media/file-utils.js b/web/media/file-utils.js
--- a/web/media/file-utils.js
+++ b/web/media/file-utils.js
@@ -18,7 +18,14 @@
   if (result.mime !== 'application/xml') {
     return result;
   }
-  const buffer = Buffer.isBuffer(data) ? data : Buffer.from(data);
+  let buffer;
+  if (Buffer.isBuffer(data)) {
+    buffer = data;
+  } else if (data instanceof ArrayBuffer) {
+    buffer = Buffer.from(data, 0);
+  } else {
+    buffer = Buffer.from(data);
+  }
   if (!isSvg(buffer)) {
     return result;
   }