diff --git a/web/fup/fupstatic/js/base.js b/web/fup/fupstatic/js/base.js
index a665b41b2f..7bbeeb2994 100644
--- a/web/fup/fupstatic/js/base.js
+++ b/web/fup/fupstatic/js/base.js
@@ -118,4 +118,32 @@ if (document.body.classList.contains('upload-page')) {
       uploadFile(file, expiryEl.value);
     }
   });
+
+  document.body.addEventListener('dragenter', (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+    document.body.classList.add('dragging-over');
+  }, false);
+  document.body.addEventListener('dragover', (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+    document.body.classList.add('dragging-over');
+  }, false);
+  document.body.addEventListener('dragleave', (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+    document.body.classList.remove('dragging-over');
+  }, false);
+  document.body.addEventListener('drop', (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+    document.body.classList.remove('dragging-over');
+
+    const dt = e.dataTransfer;
+    const files = dt.files;
+
+    for (const f of files) {
+      uploadFile(f, expiryEl.value);
+    }
+  }, false);
 }