diff --git a/Userland/Libraries/LibWebView/ViewImplementation.cpp b/Userland/Libraries/LibWebView/ViewImplementation.cpp
index ba78fc8401..8beef56bbe 100644
--- a/Userland/Libraries/LibWebView/ViewImplementation.cpp
+++ b/Userland/Libraries/LibWebView/ViewImplementation.cpp
@@ -191,6 +191,11 @@ Optional<i32> ViewImplementation::set_dom_node_tag(i32 node_id, String name)
     return client().set_dom_node_tag(node_id, move(name));
 }
 
+void ViewImplementation::add_dom_node_attributes(i32 node_id, Vector<Attribute> attributes)
+{
+    client().async_add_dom_node_attributes(node_id, move(attributes));
+}
+
 void ViewImplementation::replace_dom_node_attribute(i32 node_id, String name, Vector<Attribute> replacement_attributes)
 {
     client().async_replace_dom_node_attribute(node_id, move(name), move(replacement_attributes));
diff --git a/Userland/Libraries/LibWebView/ViewImplementation.h b/Userland/Libraries/LibWebView/ViewImplementation.h
index e8677e0f78..90ddfbb09c 100644
--- a/Userland/Libraries/LibWebView/ViewImplementation.h
+++ b/Userland/Libraries/LibWebView/ViewImplementation.h
@@ -65,6 +65,7 @@ public:
 
     void set_dom_node_text(i32 node_id, String text);
     Optional<i32> set_dom_node_tag(i32 node_id, String name);
+    void add_dom_node_attributes(i32 node_id, Vector<Attribute> attributes);
     void replace_dom_node_attribute(i32 node_id, String name, Vector<Attribute> replacement_attributes);
 
     void debug_request(DeprecatedString const& request, DeprecatedString const& argument = {});
diff --git a/Userland/Services/WebContent/ConnectionFromClient.cpp b/Userland/Services/WebContent/ConnectionFromClient.cpp
index 81ba66bdfb..d0f205c7f5 100644
--- a/Userland/Services/WebContent/ConnectionFromClient.cpp
+++ b/Userland/Services/WebContent/ConnectionFromClient.cpp
@@ -686,6 +686,18 @@ Messages::WebContentServer::SetDomNodeTagResponse ConnectionFromClient::set_dom_
     return new_element->unique_id();
 }
 
+void ConnectionFromClient::add_dom_node_attributes(i32 node_id, Vector<WebView::Attribute> const& attributes)
+{
+    auto* dom_node = Web::DOM::Node::from_unique_id(node_id);
+    if (!dom_node || !dom_node->is_element())
+        return;
+
+    auto& element = static_cast<Web::DOM::Element&>(*dom_node);
+
+    for (auto const& attribute : attributes)
+        element.set_attribute(attribute.name, attribute.value).release_value_but_fixme_should_propagate_errors();
+}
+
 void ConnectionFromClient::replace_dom_node_attribute(i32 node_id, String const& name, Vector<WebView::Attribute> const& replacement_attributes)
 {
     auto* dom_node = Web::DOM::Node::from_unique_id(node_id);
diff --git a/Userland/Services/WebContent/ConnectionFromClient.h b/Userland/Services/WebContent/ConnectionFromClient.h
index af8857ed9f..906bb9c89c 100644
--- a/Userland/Services/WebContent/ConnectionFromClient.h
+++ b/Userland/Services/WebContent/ConnectionFromClient.h
@@ -78,6 +78,7 @@ private:
 
     virtual void set_dom_node_text(i32 node_id, String const& text) override;
     virtual Messages::WebContentServer::SetDomNodeTagResponse set_dom_node_tag(i32 node_id, String const& name) override;
+    virtual void add_dom_node_attributes(i32 node_id, Vector<WebView::Attribute> const& attributes) override;
     virtual void replace_dom_node_attribute(i32 node_id, String const& name, Vector<WebView::Attribute> const& replacement_attributes) override;
 
     virtual Messages::WebContentServer::DumpLayoutTreeResponse dump_layout_tree() override;
diff --git a/Userland/Services/WebContent/WebContentServer.ipc b/Userland/Services/WebContent/WebContentServer.ipc
index a2adb80391..28faeae0b0 100644
--- a/Userland/Services/WebContent/WebContentServer.ipc
+++ b/Userland/Services/WebContent/WebContentServer.ipc
@@ -48,6 +48,7 @@ endpoint WebContentServer
 
     set_dom_node_text(i32 node_id, String text) =|
     set_dom_node_tag(i32 node_id, String name) => (Optional<i32> node_id)
+    add_dom_node_attributes(i32 node_id, Vector<WebView::Attribute> attributes) =|
     replace_dom_node_attribute(i32 node_id, String name, Vector<WebView::Attribute> replacement_attributes) =|
 
     take_document_screenshot() => (Gfx::ShareableBitmap data)