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diff --git a/examples/webenginewidgets/demobrowser/savepagedialog.cpp b/examples/webenginewidgets/demobrowser/savepagedialog.cpp
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+++ b/examples/webenginewidgets/demobrowser/savepagedialog.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "savepagedialog.h"
+#include "ui_savepagedialog.h"
+
+#include <QtCore/QDir>
+#include <QtWidgets/QFileDialog>
+
+const QWebEngineDownloadItem::SavePageFormat SavePageDialog::m_indexToFormatTable[] = {
+    QWebEngineDownloadItem::SingleHtmlSaveFormat,
+    QWebEngineDownloadItem::CompleteHtmlSaveFormat,
+    QWebEngineDownloadItem::MimeHtmlSaveFormat
+};
+
+SavePageDialog::SavePageDialog(QWidget *parent, QWebEngineDownloadItem::SavePageFormat format,
+                               const QString &filePath)
+    : QDialog(parent)
+    , ui(new Ui::SavePageDialog)
+{
+    ui->setupUi(this);
+    ui->formatComboBox->setCurrentIndex(formatToIndex(format));
+    setFilePath(filePath);
+}
+
+SavePageDialog::~SavePageDialog()
+{
+    delete ui;
+}
+
+QWebEngineDownloadItem::SavePageFormat SavePageDialog::pageFormat() const
+{
+    return indexToFormat(ui->formatComboBox->currentIndex());
+}
+
+QString SavePageDialog::filePath() const
+{
+    return QDir::fromNativeSeparators(ui->filePathLineEdit->text());
+}
+
+void SavePageDialog::on_chooseFilePathButton_clicked()
+{
+    QFileInfo fi(filePath());
+    QFileDialog dlg(this, tr("Save Page As"), fi.absolutePath());
+    dlg.setAcceptMode(QFileDialog::AcceptSave);
+    dlg.setDefaultSuffix(suffixOfFormat(pageFormat()));
+    dlg.selectFile(fi.absoluteFilePath());
+    if (dlg.exec() != QDialog::Accepted)
+        return;
+    setFilePath(dlg.selectedFiles().first());
+    ensureFileSuffix(pageFormat());
+}
+
+void SavePageDialog::on_formatComboBox_currentIndexChanged(int idx)
+{
+    ensureFileSuffix(indexToFormat(idx));
+}
+
+int SavePageDialog::formatToIndex(QWebEngineDownloadItem::SavePageFormat format)
+{
+    for (auto i : m_indexToFormatTable) {
+        if (m_indexToFormatTable[i] == format)
+            return i;
+    }
+    Q_UNREACHABLE();
+}
+
+QWebEngineDownloadItem::SavePageFormat SavePageDialog::indexToFormat(int idx)
+{
+    Q_ASSERT(idx >= 0 && size_t(idx) < (sizeof(m_indexToFormatTable)
+                                        / sizeof(QWebEngineDownloadItem::SavePageFormat)));
+    return m_indexToFormatTable[idx];
+}
+
+QString SavePageDialog::suffixOfFormat(QWebEngineDownloadItem::SavePageFormat format)
+{
+    if (format == QWebEngineDownloadItem::MimeHtmlSaveFormat)
+        return QStringLiteral(".mhtml");
+    return QStringLiteral(".html");
+}
+
+void SavePageDialog::setFilePath(const QString &filePath)
+{
+    ui->filePathLineEdit->setText(QDir::toNativeSeparators(filePath));
+}
+
+void SavePageDialog::ensureFileSuffix(QWebEngineDownloadItem::SavePageFormat format)
+{
+    QFileInfo fi(filePath());
+    setFilePath(fi.absolutePath() + QLatin1Char('/') + fi.completeBaseName()
+                + suffixOfFormat(format));
+}