diff --git a/app/utils/developer.ts b/app/utils/developer.ts
index a6c27010cd..2097d94042 100644
--- a/app/utils/developer.ts
+++ b/app/utils/developer.ts
@@ -1,10 +1,33 @@
-// A function to delete all IndexedDB databases
-export async function deleteAllDatabases() {
-  const databases = await window.indexedDB.databases();
+import flatten from "lodash/flatten";
+import stores from "~/stores";
+import { flattenTree } from "./tree";
 
-  for (const database of databases) {
-    if (database.name) {
-      window.indexedDB.deleteDatabase(database.name);
+/**
+ * Delete all databases in the browser.
+ *
+ * @returns A promise that resolves when all databases have been deleted.
+ */
+export async function deleteAllDatabases() {
+  if ("databases" in window.indexedDB) {
+    const databases = await window.indexedDB.databases();
+
+    for (const database of databases) {
+      if (database.name) {
+        window.indexedDB.deleteDatabase(database.name);
+      }
     }
+    return;
   }
+
+  // If the browser does not support listing databases, we need to manually delete as best we can
+  // by iterating over all known collections and documents.
+  await Promise.all(
+    stores.collections.orderedData.map(async (collection) => {
+      const nodes = flatten(collection.documents?.map(flattenTree));
+
+      return nodes.map(async (node) => {
+        window.indexedDB.deleteDatabase(`document.${node.id}`);
+      });
+    })
+  );
 }