diff --git a/src/edittab.cpp b/src/edittab.cpp
index b433cb4e4..34b4e2648 100644
--- a/src/edittab.cpp
+++ b/src/edittab.cpp
@@ -20,6 +20,7 @@
 #include "processorhandler.h"
 #include "ripessettings.h"
 #include "symbolnavigator.h"
+#include "wasmSupport.h"
 
 namespace Ripes {
 
@@ -87,6 +88,8 @@ EditTab::EditTab(QToolBar *toolbar, QWidget *parent)
           &EditTab::sourceTypeChanged);
   connect(m_ui->setCInput, &QRadioButton::toggled, m_buildAction,
           &QAction::setEnabled);
+  // C compiler is not yet supported on WASM.
+  disableIfWasm(m_ui->setCInput);
 
   // Ensure that changes to the current compiler path will disable C input, if
   // the compiler is invalid
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 879a54de3..95120eacb 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -15,6 +15,7 @@
 #include "syscall/syscallviewer.h"
 #include "syscall/systemio.h"
 #include "version/version.h"
+#include "wasmSupport.h"
 
 #include "fancytabbar/fancytabbar.h"
 
@@ -204,7 +205,6 @@ void MainWindow::setupMenus() {
   connect(loadAction, &QAction::triggered, this,
           [=] { this->loadFileTriggered(); });
   m_ui->menuFile->addAction(loadAction);
-
   m_ui->menuFile->addSeparator();
 
   auto *examplesMenu = m_ui->menuFile->addMenu("Load Example...");
@@ -231,7 +231,6 @@ void MainWindow::setupMenus() {
           &EditTab::editorStateChanged, saveAction,
           [saveAsAction](bool enabled) { saveAsAction->setEnabled(enabled); });
   m_ui->menuFile->addAction(saveAsAction);
-
   m_ui->menuFile->addSeparator();
 
   const QIcon exitIcon = QIcon(":/icons/cancel.svg");
@@ -246,6 +245,9 @@ void MainWindow::setupMenus() {
   m_ui->menuView->addAction(
       static_cast<ProcessorTab *>(m_tabWidgets.at(ProcessorTabID).tab)
           ->m_displayValuesAction);
+
+  // File I/O is not yet supported on WASM due to sandboxing.
+  disableIfWasm(QList{loadAction, saveAction, saveAsAction, exitAction});
 }
 
 MainWindow::~MainWindow() { delete m_ui; }
@@ -360,8 +362,8 @@ void MainWindow::loadFileTriggered() {
 }
 
 void MainWindow::wiki() {
-  QDesktopServices::openUrl(
-      QUrl(QString("https://github.com/mortbopet/Ripes/blob/master/docs/README.md")));
+  QDesktopServices::openUrl(QUrl(QString(
+      "https://github.com/mortbopet/Ripes/blob/master/docs/README.md")));
 }
 
 void MainWindow::version() {
diff --git a/src/settingsdialog.cpp b/src/settingsdialog.cpp
index e34faf1ff..441e2978b 100644
--- a/src/settingsdialog.cpp
+++ b/src/settingsdialog.cpp
@@ -21,6 +21,7 @@
 
 #include "utilities/hexspinbox.h"
 #include "utilities/scrolleventfilter.h"
+#include "wasmSupport.h"
 
 namespace Ripes {
 
@@ -148,7 +149,10 @@ SettingsDialog::SettingsDialog(QWidget *parent)
   // Create settings pages
   addPage("Environment", createEnvironmentPage());
   addPage("Simulator", createSimulatorPage());
-  addPage("Compiler", createCompilerPage());
+  auto *compilerPage = createCompilerPage();
+  addPage("Compiler", compilerPage);
+  // No C compiler support (yet) for wasm.
+  disableIfWasm(compilerPage);
   addPage("Editor", createEditorPage());
 
   m_ui->settingsList->setCurrentRow(
diff --git a/src/wasmSupport.h b/src/wasmSupport.h
new file mode 100644
index 000000000..2643f060b
--- /dev/null
+++ b/src/wasmSupport.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <QWidget>
+
+namespace Ripes {
+
+// Disable a widget if we are running in a wasm environment.
+template <typename T>
+inline void disableIfWasm(T *widget) {
+#ifdef __EMSCRIPTEN__
+  widget->setEnabled(false);
+#endif
+}
+
+// Disables a list of widgets if we are running in a wasm environment.
+template <typename TList>
+inline void disableIfWasm(TList widgets) {
+  for (auto *widget : widgets)
+    disableIfWasm(widget);
+}
+
+} // namespace Ripes
\ No newline at end of file