diff --git a/src/kconfigdialog.h b/src/kconfigdialog.h
--- a/src/kconfigdialog.h
+++ b/src/kconfigdialog.h
@@ -127,12 +127,15 @@
      * @param header - Header text use in the list modes. Ignored in Tabbed
      *        mode. If empty, the itemName text is used when needed.
      * @param manage - Whether KConfigDialogManager should manage the page or not.
+     * @param fitContentHorizontally - Whether the dialog should be resized by
+     *        default to show the "page" widget without horizontal scrolling.
      * @returns The KPageWidgetItem associated with the page.
      */
     KPageWidgetItem *addPage(QWidget *page, const QString &itemName,
                              const QString &pixmapName = QString(),
                              const QString &header = QString(),
-                             bool manage = true);
+                             bool manage = true,
+                             bool fitContentHorizontally = false);
 
     /**
      * Adds page to the dialog that is managed by a custom KConfigDialogManager.
@@ -150,12 +153,15 @@
      *        used to retrieve, or an absolute path to the pixmap on disk.
      * @param header - Header text use in the list modes. Ignored in Tabbed
      *        mode. If empty, the itemName text is used when needed.
+     * @param fitContentHorizontally - Whether the dialog should be resized by
+     *        default to show the "page" widget without horizontal scrolling.
      * @returns The KPageWidgetItem associated with the page.
      */
     KPageWidgetItem *addPage(QWidget *page, KCoreConfigSkeleton *config,
                              const QString &itemName,
                              const QString &pixmapName = QString(),
-                             const QString &header = QString());
+                             const QString &header = QString(),
+                             bool fitContentHorizontally = false);
 
     /**
      * See if a dialog with the name 'name' already exists.
diff --git a/src/kconfigdialog.cpp b/src/kconfigdialog.cpp
--- a/src/kconfigdialog.cpp
+++ b/src/kconfigdialog.cpp
@@ -37,6 +37,7 @@
 #include <QCoreApplication>
 #include <QDesktopServices>
 #include <QScrollArea>
+#include <QScrollBar>
 
 class Q_DECL_HIDDEN KConfigDialog::KConfigDialogPrivate
 {
@@ -80,7 +81,8 @@
     }
 
     KPageWidgetItem *addPageInternal(QWidget *page, const QString &itemName,
-                                     const QString &pixmapName, const QString &header);
+                                     const QString &pixmapName, const QString &header,
+                                     bool fitContentHorizontally = false);
 
     void setupManagerConnections(KConfigDialogManager *manager);
     void setApplyButtonEnabled(bool enabled);
@@ -121,14 +123,16 @@
                                         const QString &itemName,
                                         const QString &pixmapName,
                                         const QString &header,
-                                        bool manage)
+                                        bool manage,
+                                        bool fitContentHorizontally)
 {
     Q_ASSERT(page);
     if (!page) {
         return nullptr;
     }
 
-    KPageWidgetItem *item = d->addPageInternal(page, itemName, pixmapName, header);
+    KPageWidgetItem *item = d->addPageInternal(page, itemName, pixmapName, header,
+                                               fitContentHorizontally);
     if (manage) {
         d->manager->addWidget(page);
     }
@@ -148,14 +152,16 @@
                                         KCoreConfigSkeleton *config,
                                         const QString &itemName,
                                         const QString &pixmapName,
-                                        const QString &header)
+                                        const QString &header,
+                                        bool fitContentHorizontally)
 {
     Q_ASSERT(page);
     if (!page) {
         return nullptr;
     }
 
-    KPageWidgetItem *item = d->addPageInternal(page, itemName, pixmapName, header);
+    KPageWidgetItem *item = d->addPageInternal(page, itemName, pixmapName, header,
+                                               fitContentHorizontally);
     d->managerForPage[page] = new KConfigDialogManager(page, config);
     d->setupManagerConnections(d->managerForPage[page]);
 
@@ -170,23 +176,50 @@
     return item;
 }
 
+
+// Helper class overriding sizeHint() in QScrollArea to fit the content QWidget horizontally.
+class FittingScrollArea : public QScrollArea
+{
+public:
+    FittingScrollArea(QWidget* parent) : QScrollArea(parent) {}
+
+    QSize sizeHint() const override
+    {
+        const QWidget* const contentWidget = widget();
+        if (contentWidget == nullptr) {
+            return QScrollArea::sizeHint();
+        }
+
+        const int width = contentWidget->sizeHint().width() + verticalScrollBar()->width();
+        const int height = QScrollArea::sizeHint().height();
+        return QSize(width, height);
+    }
+};
+
 KPageWidgetItem *KConfigDialog::KConfigDialogPrivate::addPageInternal(QWidget *page,
         const QString &itemName,
         const QString &pixmapName,
-        const QString &header)
+        const QString &header,
+        bool fitContentHorizontally)
 {
     QWidget *frame = new QWidget(q);
     QVBoxLayout *boxLayout = new QVBoxLayout(frame);
     boxLayout->setMargin(0);
     boxLayout->setMargin(0);
 
-    QScrollArea *scroll = new QScrollArea(q);
+    QScrollArea *scroll = nullptr;
+    if (fitContentHorizontally) {
+        scroll = new FittingScrollArea(q);
+        scroll->setSizePolicy( QSizePolicy::Preferred, QSizePolicy::Preferred );
+    } else {
+        scroll = new QScrollArea(q);
+        scroll->setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding );
+    }
     scroll->setFrameShape(QFrame::NoFrame);
     scroll->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
     scroll->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
     scroll->setWidget(page);
     scroll->setWidgetResizable(true);
-    scroll->setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding );
 
     boxLayout->addWidget(scroll);
     KPageWidgetItem *item = new KPageWidgetItem(frame, itemName);