diff --git a/qt/aqt/browser/previewer.py b/qt/aqt/browser/previewer.py
index ec4b9cff0..7421141c2 100644
--- a/qt/aqt/browser/previewer.py
+++ b/qt/aqt/browser/previewer.py
@@ -127,10 +127,7 @@ class Previewer(QDialog):
         self._web.stdHtml(
             self.mw.reviewer.revHtml(),
             css=["css/reviewer.css"],
-            js=[
-                "js/vendor/protobuf.min.js",
-                "js/reviewer.js",
-            ],
+            js=["js/reviewer.js"],
             context=self,
         )
         self._web.set_bridge_command(self._on_bridge_cmd, self)
diff --git a/qt/aqt/clayout.py b/qt/aqt/clayout.py
index cbf602675..0a3fea9b4 100644
--- a/qt/aqt/clayout.py
+++ b/qt/aqt/clayout.py
@@ -333,10 +333,7 @@ class CardLayout(QDialog):
         self.preview_web.stdHtml(
             self.mw.reviewer.revHtml(),
             css=["css/reviewer.css"],
-            js=[
-                "js/vendor/protobuf.min.js",
-                "js/reviewer.js",
-            ],
+            js=["js/reviewer.js"],
             context=self,
         )
         self.preview_web.set_bridge_command(self._on_bridge_cmd, self)
diff --git a/qt/aqt/reviewer.py b/qt/aqt/reviewer.py
index a670495ad..e2ceced7d 100644
--- a/qt/aqt/reviewer.py
+++ b/qt/aqt/reviewer.py
@@ -287,10 +287,7 @@ class Reviewer:
         self.web.stdHtml(
             self.revHtml(),
             css=["css/reviewer.css"],
-            js=[
-                "js/vendor/protobuf.min.js",
-                "js/reviewer.js",
-            ],
+            js=["js/reviewer.js"],
             context=self,
         )
         # show answer / ease buttons
diff --git a/ts/editor/BUILD.bazel b/ts/editor/BUILD.bazel
index 278acdf5e..18221bd9e 100644
--- a/ts/editor/BUILD.bazel
+++ b/ts/editor/BUILD.bazel
@@ -133,10 +133,10 @@ esbuild(
     output_css = "editor.css",
     visibility = ["//visibility:public"],
     deps = [
-        "base_css",
-        "bootstrap-icons",
         "editor_ts",
+        "base_css",
         "local_css",
+        "bootstrap-icons",
         "mdi-icons",
         "svelte_components",
         "//ts/components",
diff --git a/ts/reviewer/BUILD.bazel b/ts/reviewer/BUILD.bazel
index d68a5b531..228dd078b 100644
--- a/ts/reviewer/BUILD.bazel
+++ b/ts/reviewer/BUILD.bazel
@@ -29,22 +29,16 @@ ts_library(
 
 esbuild(
     name = "reviewer",
-    srcs = [
-        "//ts:protobuf-shim.js",
-    ],
     args = [
         "--resolve-extensions=.mjs,.js",
         "--log-level=warning",
     ],
     entry_point = "index_wrapper.ts",
-    external = [
-        "protobufjs/light",
-    ],
     visibility = ["//visibility:public"],
     deps = [
         ":reviewer_ts",
-        "@npm//mathjax-full",
         "//ts/lib",
+        "//ts/lib:backend_proto",
         "@npm//protobufjs",
     ],
 )