diff --git a/spec/fixtures/api/native-window-open-argv.html b/spec/fixtures/api/native-window-open-argv.html
deleted file mode 100644
index fa613b1bf7a0..000000000000
--- a/spec/fixtures/api/native-window-open-argv.html
+++ /dev/null
@@ -1,8 +0,0 @@
-<html>
-<body>
-<script type="text/javascript" charset="utf-8">
-  const popup = window.open()
-  require('electron').ipcRenderer.send('answer', typeof popup.process)
-</script>
-</body>
-</html>
diff --git a/spec/fixtures/module/preload-pdf-loaded-in-nested-subframe.js b/spec/fixtures/module/preload-pdf-loaded-in-nested-subframe.js
deleted file mode 100644
index e72a4a4058db..000000000000
--- a/spec/fixtures/module/preload-pdf-loaded-in-nested-subframe.js
+++ /dev/null
@@ -1,15 +0,0 @@
-const { ipcRenderer } = require('electron');
-
-document.addEventListener('DOMContentLoaded', (event) => {
-  const outerFrame = document.querySelector('#outer-frame');
-  if (outerFrame) {
-    outerFrame.onload = function () {
-      const pdframe = outerFrame.contentWindow.document.getElementById('pdf-frame');
-      if (pdframe) {
-        pdframe.contentWindow.addEventListener('pdf-loaded', (event) => {
-          ipcRenderer.send('pdf-loaded', event.detail);
-        });
-      }
-    };
-  }
-});
diff --git a/spec/fixtures/module/preload-pdf-loaded-in-subframe.js b/spec/fixtures/module/preload-pdf-loaded-in-subframe.js
deleted file mode 100644
index dd7a7aaa42d6..000000000000
--- a/spec/fixtures/module/preload-pdf-loaded-in-subframe.js
+++ /dev/null
@@ -1,10 +0,0 @@
-const { ipcRenderer } = require('electron');
-
-document.addEventListener('DOMContentLoaded', (event) => {
-  const subframe = document.querySelector('#pdf-frame');
-  if (subframe) {
-    subframe.contentWindow.addEventListener('pdf-loaded', (event) => {
-      ipcRenderer.send('pdf-loaded', event.detail);
-    });
-  }
-});
diff --git a/spec/fixtures/module/preload-pdf-loaded.js b/spec/fixtures/module/preload-pdf-loaded.js
deleted file mode 100644
index aa5c8fb4ffac..000000000000
--- a/spec/fixtures/module/preload-pdf-loaded.js
+++ /dev/null
@@ -1,5 +0,0 @@
-const { ipcRenderer } = require('electron');
-
-window.addEventListener('pdf-loaded', function (event) {
-  ipcRenderer.send('pdf-loaded', event.detail);
-});
diff --git a/spec/fixtures/pages/target-name.html b/spec/fixtures/pages/target-name.html
deleted file mode 100644
index 0dc760d233f5..000000000000
--- a/spec/fixtures/pages/target-name.html
+++ /dev/null
@@ -1,13 +0,0 @@
-<html>
-<body>
-<a id="a", href="http://host" target="target">link</a>
-<script type="text/javascript" charset="utf-8">
-  var event = new MouseEvent('click', {
-    'view': window,
-    'bubbles': true,
-    'cancelable': true
-  });
-  document.getElementById('a').dispatchEvent(event);
-</script>
-</body>
-</html>
diff --git a/spec/fixtures/zip/a.zip b/spec/fixtures/zip/a.zip
deleted file mode 100644
index 7b3a13209f55..000000000000
Binary files a/spec/fixtures/zip/a.zip and /dev/null differ
