diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp b/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp
index 43d430ac906..be56135d4d9 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp
@@ -150,4 +150,14 @@ void WebGLRenderingContext::allocate_painting_surface_if_needed()
     context().allocate_painting_surface_if_needed();
 }
 
+Optional<Vector<String>> WebGLRenderingContext::get_supported_extensions() const
+{
+    return {};
+}
+
+JS::Object* WebGLRenderingContext::get_extension(String const&)
+{
+    return nullptr;
+}
+
 }
diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContext.h b/Libraries/LibWeb/WebGL/WebGLRenderingContext.h
index 7376ac477a6..c0482d736da 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContext.h
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContext.h
@@ -39,6 +39,9 @@ public:
     void set_size(Gfx::IntSize const&);
     void reset_to_default_state();
 
+    Optional<Vector<String>> get_supported_extensions() const;
+    JS::Object* get_extension(String const& name);
+
 private:
     virtual void initialize(JS::Realm&) override;
 
diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
index 696e3b3bb98..09ce7f7af1c 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
@@ -41,8 +41,8 @@ interface mixin WebGLRenderingContextBase {
     [FIXME] WebGLContextAttributes? getContextAttributes();
     [FIXME] boolean isContextLost();
 
-    [FIXME] sequence<DOMString>? getSupportedExtensions();
-    [FIXME] object? getExtension(DOMString name);
+    sequence<DOMString>? getSupportedExtensions();
+    object? getExtension(DOMString name);
 
     undefined activeTexture(GLenum texture);
     undefined attachShader(WebGLProgram program, WebGLShader shader);
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
index c34a772930d..0b4b5aab42f 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
@@ -171,6 +171,11 @@ public:
             continue;
         }
 
+        if (function.name == "getSupportedExtensions"sv || function.name == "getExtension"sv) {
+            // Implemented in WebGLRenderingContext
+            continue;
+        }
+
         StringBuilder function_declaration;
 
         StringBuilder function_parameters;