diff --git a/patches/chromium/can_create_window.patch b/patches/chromium/can_create_window.patch
index c5f7776ce743..b93a4d75a962 100644
--- a/patches/chromium/can_create_window.patch
+++ b/patches/chromium/can_create_window.patch
@@ -21,10 +21,21 @@ index 23cd457563d7d534e924428ac6da2b475e579326..d8698f9f37eefa50bf4e29a164b2cc30
            &no_javascript_access);
  
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index f3204a39253652a906f8976c666395e8afa033a8..a45bf004f5096809b5fc7b70faa0b7fa7b257049 100644
+index f3204a39253652a906f8976c666395e8afa033a8..d9b5a70e0c7acfaac312663ba336580eb062fae4 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
-@@ -5293,6 +5293,12 @@ FrameTree* WebContentsImpl::CreateNewWindow(
+@@ -5238,6 +5238,10 @@ FrameTree* WebContentsImpl::CreateNewWindow(
+   create_params.initially_hidden = renderer_started_hidden;
+   create_params.initial_popup_url = params.target_url;
+ 
++  // Potentially allow the delegate to override the create_params.
++  if (delegate_)
++    delegate_->MaybeOverrideCreateParamsForNewWindow(&create_params);
++
+   // Even though all codepaths leading here are in response to a renderer
+   // trying to open a new window, if the new window ends up in a different
+   // browsing instance, then the RenderViewHost, RenderWidgetHost,
+@@ -5293,6 +5297,12 @@ FrameTree* WebContentsImpl::CreateNewWindow(
    // Sets the newly created WebContents WindowOpenDisposition.
    new_contents_impl->original_window_open_disposition_ = params.disposition;
  
@@ -37,7 +48,7 @@ index f3204a39253652a906f8976c666395e8afa033a8..a45bf004f5096809b5fc7b70faa0b7fa
    // If the new frame has a name, make sure any SiteInstances that can find
    // this named frame have proxies for it.  Must be called after
    // SetSessionStorageNamespace, since this calls CreateRenderView, which uses
-@@ -5334,12 +5340,6 @@ FrameTree* WebContentsImpl::CreateNewWindow(
+@@ -5334,12 +5344,6 @@ FrameTree* WebContentsImpl::CreateNewWindow(
      AddWebContentsDestructionObserver(new_contents_impl);
    }
  
@@ -122,7 +133,7 @@ index f42be2a1cc5ba3ccb52e48985e0532a34675e826..f6ab6ab2b036c7621b429181c3ff89d9
      WebContents* source,
      const OpenURLParams& params,
 diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
-index d33274984bf6523beeb3ab5ee586499d224bff3c..83bdd195339eb7d61ac88e2994fd8dabe93f6ecc 100644
+index d33274984bf6523beeb3ab5ee586499d224bff3c..89c3f86bc828c5bf844bb103477c0772ba275dc5 100644
 --- a/content/public/browser/web_contents_delegate.h
 +++ b/content/public/browser/web_contents_delegate.h
 @@ -18,6 +18,7 @@
@@ -133,7 +144,7 @@ index d33274984bf6523beeb3ab5ee586499d224bff3c..83bdd195339eb7d61ac88e2994fd8dab
  #include "content/public/browser/eye_dropper.h"
  #include "content/public/browser/fullscreen_types.h"
  #include "content/public/browser/invalidate_type.h"
-@@ -380,6 +381,13 @@ class CONTENT_EXPORT WebContentsDelegate {
+@@ -380,6 +381,16 @@ class CONTENT_EXPORT WebContentsDelegate {
        const StoragePartitionConfig& partition_config,
        SessionStorageNamespace* session_storage_namespace);
  
@@ -143,6 +154,9 @@ index d33274984bf6523beeb3ab5ee586499d224bff3c..83bdd195339eb7d61ac88e2994fd8dab
 +      int opener_render_frame_id,
 +      const mojom::CreateNewWindowParams& params,
 +      WebContents* new_contents);
++
++  virtual void MaybeOverrideCreateParamsForNewWindow(
++      content::WebContents::CreateParams* create_params) {}
 +
    // Notifies the delegate about the creation of a new WebContents. This
    // typically happens when popups are created.
diff --git a/patches/chromium/chore_partial_revert_of.patch b/patches/chromium/chore_partial_revert_of.patch
index 1b87ecd0db97..ff615717998d 100644
--- a/patches/chromium/chore_partial_revert_of.patch
+++ b/patches/chromium/chore_partial_revert_of.patch
@@ -14,7 +14,7 @@ track down the source of this problem & figure out if we can fix it
 by changing something in Electron.
 
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index 0fba6e8b5f1f9ecde06b9d846b4ace984cdfc943..b50e3c2ecb6f9f3322cfd16fc7bcbd8935f863a2 100644
+index c2ce5a360607a304d8435d6e58a4f0895dd08056..71d85d2e3111457eca540e80bf8a68ebc548d440 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
 @@ -5209,7 +5209,7 @@ FrameTree* WebContentsImpl::CreateNewWindow(
diff --git a/patches/chromium/chore_provide_iswebcontentscreationoverridden_with_full_params.patch b/patches/chromium/chore_provide_iswebcontentscreationoverridden_with_full_params.patch
index eaaef662c741..ec34b917f6a8 100644
--- a/patches/chromium/chore_provide_iswebcontentscreationoverridden_with_full_params.patch
+++ b/patches/chromium/chore_provide_iswebcontentscreationoverridden_with_full_params.patch
@@ -222,7 +222,7 @@ index b969f1d97b7e3396119b579cfbe61e19ff7d2dd4..b8d6169652da28266a514938b45b39c5
    content::WebContents* AddNewContents(
        content::WebContents* source,
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index c034b546289ba069194ad65d3d3bc0703a3afe9c..e603c0fddbf4efaeb225686c1791ffb581e9e6c0 100644
+index d57f205ea7dd4737126ddd7f2284d72eddae9e8f..bf6a239f566ec39efdacce5b74014d2995ba868e 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
 @@ -5172,8 +5172,7 @@ FrameTree* WebContentsImpl::CreateNewWindow(
@@ -250,7 +250,7 @@ index f6ab6ab2b036c7621b429181c3ff89d9f1ff77f9..d151ba757ae81c6f023ee08328ab1554
  }
  
 diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
-index 83bdd195339eb7d61ac88e2994fd8dabe93f6ecc..682e5eecb7ce514094f76253447aa7ac4b6f29b1 100644
+index 89c3f86bc828c5bf844bb103477c0772ba275dc5..c3eef892eef2c42c46926be223fe950823e6943d 100644
 --- a/content/public/browser/web_contents_delegate.h
 +++ b/content/public/browser/web_contents_delegate.h
 @@ -359,8 +359,7 @@ class CONTENT_EXPORT WebContentsDelegate {
diff --git a/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch b/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch
index 019258275bd6..74f95da942a8 100644
--- a/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch
+++ b/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch
@@ -87,10 +87,10 @@ index 75df43e3cd2721a92c90c18154d53d5c203e2465..ce42c75c8face36d21f53f44c0201ac4
    // The view with active text input state, i.e., a focused <input> element.
    // It will be nullptr if no such view exists. Note that the active view
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index 374d5f1a1685229865d0f1f1032f36bbcd54e92e..0fba6e8b5f1f9ecde06b9d846b4ace984cdfc943 100644
+index 837913b6b82e473e8fa90209924b245d28e922e7..c2ce5a360607a304d8435d6e58a4f0895dd08056 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
-@@ -10071,7 +10071,7 @@ void WebContentsImpl::OnFocusedElementChangedInFrame(
+@@ -10075,7 +10075,7 @@ void WebContentsImpl::OnFocusedElementChangedInFrame(
                          "WebContentsImpl::OnFocusedElementChangedInFrame",
                          "render_frame_host", frame);
    RenderWidgetHostViewBase* root_view =
diff --git a/patches/chromium/refactor_expose_cursor_changes_to_the_webcontentsobserver.patch b/patches/chromium/refactor_expose_cursor_changes_to_the_webcontentsobserver.patch
index 733ee1e4ca6c..341924fa911a 100644
--- a/patches/chromium/refactor_expose_cursor_changes_to_the_webcontentsobserver.patch
+++ b/patches/chromium/refactor_expose_cursor_changes_to_the_webcontentsobserver.patch
@@ -44,10 +44,10 @@ index 624094ba6459f3663a12f868c4cb47dfa9f8dce1..eed851d277c5efa2d5ca594e18eaf7df
  
  void RenderWidgetHostImpl::ShowContextMenuAtPoint(
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index a45bf004f5096809b5fc7b70faa0b7fa7b257049..c034b546289ba069194ad65d3d3bc0703a3afe9c 100644
+index d9b5a70e0c7acfaac312663ba336580eb062fae4..d57f205ea7dd4737126ddd7f2284d72eddae9e8f 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
-@@ -6045,6 +6045,11 @@ TextInputManager* WebContentsImpl::GetTextInputManager() {
+@@ -6049,6 +6049,11 @@ TextInputManager* WebContentsImpl::GetTextInputManager() {
    return text_input_manager_.get();
  }
  
diff --git a/patches/chromium/refactor_unfilter_unresponsive_events.patch b/patches/chromium/refactor_unfilter_unresponsive_events.patch
index 429dc4371d97..9582fefe97be 100644
--- a/patches/chromium/refactor_unfilter_unresponsive_events.patch
+++ b/patches/chromium/refactor_unfilter_unresponsive_events.patch
@@ -15,10 +15,10 @@ This CL removes these filters so the unresponsive event can still be
 accessed from our JS event. The filtering is moved into Electron's code.
 
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index b50e3c2ecb6f9f3322cfd16fc7bcbd8935f863a2..d7afac20523d2900cbefa5ab3ea9f0863780b704 100644
+index 71d85d2e3111457eca540e80bf8a68ebc548d440..7be5466f9e81be22676d65bc04af6404c1da9f3b 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
-@@ -10208,25 +10208,13 @@ void WebContentsImpl::RendererUnresponsive(
+@@ -10212,25 +10212,13 @@ void WebContentsImpl::RendererUnresponsive(
      base::RepeatingClosure hang_monitor_restarter) {
    OPTIONAL_TRACE_EVENT1("content", "WebContentsImpl::RendererUnresponsive",
                          "render_widget_host", render_widget_host);
diff --git a/patches/chromium/web_contents.patch b/patches/chromium/web_contents.patch
index b32c18f89d32..8cc4dfdf2b01 100644
--- a/patches/chromium/web_contents.patch
+++ b/patches/chromium/web_contents.patch
@@ -9,7 +9,7 @@ is needed for OSR.
 Originally landed in https://github.com/electron/libchromiumcontent/pull/226.
 
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index e603c0fddbf4efaeb225686c1791ffb581e9e6c0..88d7b948d57f53fcd681856587f79ece991ee8fa 100644
+index bf6a239f566ec39efdacce5b74014d2995ba868e..e233701dddea01dd727dcd02d096b331c8aeff97 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
 @@ -4079,6 +4079,13 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params,
diff --git a/patches/chromium/webview_fullscreen.patch b/patches/chromium/webview_fullscreen.patch
index 14ea68c8b6f2..2e38c9798f14 100644
--- a/patches/chromium/webview_fullscreen.patch
+++ b/patches/chromium/webview_fullscreen.patch
@@ -37,7 +37,7 @@ index d8698f9f37eefa50bf4e29a164b2cc302c32ecdf..3a8dc82b882aa00e9a5430bc8b7ba409
    if (had_fullscreen_token && !GetView()->HasFocus())
      GetView()->Focus();
 diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
-index 88d7b948d57f53fcd681856587f79ece991ee8fa..374d5f1a1685229865d0f1f1032f36bbcd54e92e 100644
+index e233701dddea01dd727dcd02d096b331c8aeff97..837913b6b82e473e8fa90209924b245d28e922e7 100644
 --- a/content/browser/web_contents/web_contents_impl.cc
 +++ b/content/browser/web_contents/web_contents_impl.cc
 @@ -4369,21 +4369,25 @@ KeyboardEventProcessingResult WebContentsImpl::PreHandleKeyboardEvent(
diff --git a/shell/browser/api/electron_api_web_contents.cc b/shell/browser/api/electron_api_web_contents.cc
index 1f20445f66fc..023e6aeb66ef 100644
--- a/shell/browser/api/electron_api_web_contents.cc
+++ b/shell/browser/api/electron_api_web_contents.cc
@@ -1209,6 +1209,31 @@ content::WebContents* WebContents::CreateCustomWebContents(
   return nullptr;
 }
 
+void WebContents::MaybeOverrideCreateParamsForNewWindow(
+    content::WebContents::CreateParams* create_params) {
+  v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
+  v8::HandleScope handle_scope(isolate);
+  gin_helper::Dictionary dict;
+  gin::ConvertFromV8(isolate, pending_child_web_preferences_.Get(isolate),
+                     &dict);
+
+  v8::Local<v8::Value> use_offscreen;
+  if (dict.Get(options::kOffscreen, &use_offscreen)) {
+    bool is_offscreen =
+        use_offscreen->IsObject() ||
+        (use_offscreen->IsBoolean() &&
+         dict.Get(options::kOffscreen, &is_offscreen) && is_offscreen);
+
+    if (is_offscreen) {
+      auto* view = new OffScreenWebContentsView(
+          false, offscreen_use_shared_texture_,
+          base::BindRepeating(&WebContents::OnPaint, base::Unretained(this)));
+      create_params->view = view;
+      create_params->delegate_view = view;
+    }
+  }
+}
+
 content::WebContents* WebContents::AddNewContents(
     content::WebContents* source,
     std::unique_ptr<content::WebContents> new_contents,
@@ -1222,9 +1247,13 @@ content::WebContents* WebContents::AddNewContents(
 
   v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
 
+  Type type = Type::kBrowserWindow;
+  auto* web_preferences = WebContentsPreferences::From(new_contents.get());
+  if (web_preferences && web_preferences->IsOffscreen())
+    type = Type::kOffScreen;
+
   v8::HandleScope handle_scope(isolate);
-  auto api_web_contents =
-      CreateAndTake(isolate, std::move(new_contents), Type::kBrowserWindow);
+  auto api_web_contents = CreateAndTake(isolate, std::move(new_contents), type);
 
   // We call RenderFrameCreated here as at this point the empty "about:blank"
   // render frame has already been created.  If the window never navigates again
diff --git a/shell/browser/api/electron_api_web_contents.h b/shell/browser/api/electron_api_web_contents.h
index 795ebb3423e2..6e8311bef4d9 100644
--- a/shell/browser/api/electron_api_web_contents.h
+++ b/shell/browser/api/electron_api_web_contents.h
@@ -508,6 +508,8 @@ class WebContents final : public ExclusiveAccessContext,
       int opener_render_frame_id,
       const content::mojom::CreateNewWindowParams& params,
       content::WebContents* new_contents) override;
+  void MaybeOverrideCreateParamsForNewWindow(
+      content::WebContents::CreateParams* create_params) override;
   content::WebContents* AddNewContents(
       content::WebContents* source,
       std::unique_ptr<content::WebContents> new_contents,
diff --git a/spec/guest-window-manager-spec.ts b/spec/guest-window-manager-spec.ts
index 88daa4cfae2a..c614f6e42c89 100644
--- a/spec/guest-window-manager-spec.ts
+++ b/spec/guest-window-manager-spec.ts
@@ -4,6 +4,7 @@ import { expect, assert } from 'chai';
 
 import { once } from 'node:events';
 import * as http from 'node:http';
+import * as nodePath from 'node:path';
 
 import { HexColors, ScreenCapture, hasCapturableScreen } from './lib/screen-helpers';
 import { ifit, listen } from './lib/spec-helpers';
@@ -203,6 +204,66 @@ describe('webContents.setWindowOpenHandler', () => {
       expect(await browserWindow.webContents.executeJavaScript('42')).to.equal(42);
     });
 
+    it('can open an offscreen child window from an onscreen parent', async () => {
+      browserWindow.webContents.setWindowOpenHandler(() => ({
+        action: 'allow',
+        overrideBrowserWindowOptions: {
+          webPreferences: {
+            offscreen: true
+          }
+        }
+      }));
+
+      const didCreateWindow = once(browserWindow.webContents, 'did-create-window');
+      const url = `file://${nodePath.join('fixtures', 'pages', 'content.html')}`;
+      browserWindow.webContents.executeJavaScript(`window.open('${JSON.stringify(url)}') && true`);
+      const [childWindow] = await didCreateWindow;
+      expect(childWindow.webContents.isOffscreen()).to.be.true('Child window should be offscreen');
+    });
+
+    it('can open an onscreen child window from an offscreen parent', async () => {
+      const obw = new BrowserWindow({
+        show: false,
+        webPreferences: {
+          offscreen: true
+        }
+      });
+
+      await obw.loadURL('about:blank');
+      obw.webContents.setWindowOpenHandler(() => ({ action: 'allow' }));
+
+      const didCreateWindow = once(obw.webContents, 'did-create-window');
+      const url = `file://${nodePath.join('fixtures', 'pages', 'content.html')}`;
+      obw.webContents.executeJavaScript(`window.open('${JSON.stringify(url)}') && true`);
+      const [childWindow] = await didCreateWindow;
+      expect(childWindow.webContents.isOffscreen()).to.be.false('Child window should not be offscreen');
+    });
+
+    it('can open an offscreen child window from an offscreen parent', async () => {
+      const obw = new BrowserWindow({
+        show: false,
+        webPreferences: {
+          offscreen: true
+        }
+      });
+
+      await obw.loadURL('about:blank');
+      obw.webContents.setWindowOpenHandler(() => ({
+        action: 'allow',
+        overrideBrowserWindowOptions: {
+          webPreferences: {
+            offscreen: true
+          }
+        }
+      }));
+
+      const didCreateWindow = once(obw.webContents, 'did-create-window');
+      const url = `file://${nodePath.join('fixtures', 'pages', 'content.html')}`;
+      obw.webContents.executeJavaScript(`window.open('${JSON.stringify(url)}') && true`);
+      const [childWindow] = await didCreateWindow;
+      expect(childWindow.webContents.isOffscreen()).to.be.true('Child window should be offscreen');
+    });
+
     ifit(hasCapturableScreen())('should not make child window background transparent', async () => {
       browserWindow.webContents.setWindowOpenHandler(() => ({ action: 'allow' }));
       const didCreateWindow = once(browserWindow.webContents, 'did-create-window');