diff --git a/tools/lammps-gui/CMakeLists.txt b/tools/lammps-gui/CMakeLists.txt
index 10ac72783f..0cd15bd753 100644
--- a/tools/lammps-gui/CMakeLists.txt
+++ b/tools/lammps-gui/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 
-project(lammps-gui VERSION 1.3.1 LANGUAGES CXX)
+project(lammps-gui VERSION 1.4.0 LANGUAGES CXX)
 
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTOMOC ON)
@@ -72,17 +72,17 @@ find_package(Qt5 5.12 REQUIRED COMPONENTS Widgets Charts)
 
 set(PROJECT_SOURCES
   main.cpp
+  lammpsgui.cpp
+  lammpsgui.h
+  lammpsgui.ui
+  chartviewer.cpp
+  chartviewer.h
   codeeditor.cpp
   codeeditor.h
   highlighter.cpp
   highlighter.h
   imageviewer.cpp
   imageviewer.h
-  chartviewer.cpp
-  chartviewer.h
-  lammpsgui.cpp
-  lammpsgui.h
-  lammpsgui.ui
   lammpsrunner.h
   lammpswrapper.cpp
   lammpswrapper.h
@@ -93,6 +93,8 @@ set(PROJECT_SOURCES
   preferences.h
   setvariables.cpp
   setvariables.h
+  slideshow.h
+  slideshow.cpp
   stdcapture.cpp
   ${PLUGIN_LOADER_SRC}
   ${ICON_RC_FILE}
diff --git a/tools/lammps-gui/image-x-generic.png b/tools/lammps-gui/image-x-generic.png
new file mode 100644
index 0000000000..1fe112632a
Binary files /dev/null and b/tools/lammps-gui/image-x-generic.png differ
diff --git a/tools/lammps-gui/lammpsgui.cpp b/tools/lammps-gui/lammpsgui.cpp
index d5fe1d043a..b340ab766d 100644
--- a/tools/lammps-gui/lammpsgui.cpp
+++ b/tools/lammps-gui/lammpsgui.cpp
@@ -20,6 +20,7 @@
 #include "logwindow.h"
 #include "preferences.h"
 #include "setvariables.h"
+#include "slideshow.h"
 #include "stdcapture.h"
 #include "ui_lammpsgui.h"
 
@@ -96,8 +97,8 @@ static bool has_exe(const QString &exe)
 LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
     QMainWindow(parent), ui(new Ui::LammpsGui), highlighter(nullptr), capturer(nullptr),
     status(nullptr), logwindow(nullptr), imagewindow(nullptr), chartwindow(nullptr),
-    logupdater(nullptr), dirstatus(nullptr), progress(nullptr), prefdialog(nullptr),
-    lammpsstatus(nullptr), varwindow(nullptr)
+    slideshow(nullptr), logupdater(nullptr), dirstatus(nullptr), progress(nullptr),
+    prefdialog(nullptr), lammpsstatus(nullptr), varwindow(nullptr)
 {
     // enforce using the plain ASCII C locale within the GUI.
     QLocale::setDefault(QLocale("C"));
@@ -239,6 +240,7 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
     connect(ui->actionView_Log_Window, &QAction::triggered, this, &LammpsGui::view_log);
     connect(ui->actionView_Graph_Window, &QAction::triggered, this, &LammpsGui::view_chart);
     connect(ui->actionView_Image_Window, &QAction::triggered, this, &LammpsGui::view_image);
+    connect(ui->actionView_Slide_Show, &QAction::triggered, this, &LammpsGui::view_slides);
     connect(ui->actionView_Variable_Window, &QAction::triggered, this, &LammpsGui::view_variables);
     connect(ui->action_1, &QAction::triggered, this, &LammpsGui::open_recent);
     connect(ui->action_2, &QAction::triggered, this, &LammpsGui::open_recent);
@@ -265,15 +267,19 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
     auto *lammpsrun   = new QPushButton(QIcon(":/system-run.png"), "");
     auto *lammpsstop  = new QPushButton(QIcon(":/process-stop.png"), "");
     auto *lammpsimage = new QPushButton(QIcon(":/emblem-photos.png"), "");
+    auto *lammpsslide = new QPushButton(QIcon(":/image-x-generic.png"), "");
     lammpsrun->setToolTip("Run LAMMPS on input");
     lammpsstop->setToolTip("Stop LAMMPS");
     lammpsimage->setToolTip("Create snapshot image");
+    lammpsslide->setToolTip("View Slide Show");
     ui->statusbar->addWidget(lammpsrun);
     ui->statusbar->addWidget(lammpsstop);
     ui->statusbar->addWidget(lammpsimage);
+    ui->statusbar->addWidget(lammpsslide);
     connect(lammpsrun, &QPushButton::released, this, &LammpsGui::run_buffer);
     connect(lammpsstop, &QPushButton::released, this, &LammpsGui::stop_run);
     connect(lammpsimage, &QPushButton::released, this, &LammpsGui::render_image);
+    connect(lammpsslide, &QPushButton::released, this, &LammpsGui::view_slides);
 
     status = new QLabel("Ready.");
     status->setFixedWidth(300);
@@ -307,6 +313,7 @@ LammpsGui::~LammpsGui()
     delete chartwindow;
     delete dirstatus;
     delete varwindow;
+    delete slideshow;
 }
 
 void LammpsGui::new_document()
@@ -982,6 +989,15 @@ void LammpsGui::render_image()
     imagewindow->show();
 }
 
+void LammpsGui::view_slides()
+{
+    if (!slideshow) slideshow = new SlideShow(current_file, &lammps);
+    if (slideshow->isVisible())
+        slideshow->hide();
+    else
+        slideshow->show();
+}
+
 void LammpsGui::view_chart()
 {
     QSettings settings;
diff --git a/tools/lammps-gui/lammpsgui.h b/tools/lammps-gui/lammpsgui.h
index aeda618443..6d80b0aee6 100644
--- a/tools/lammps-gui/lammpsgui.h
+++ b/tools/lammps-gui/lammpsgui.h
@@ -45,6 +45,7 @@ class StdCapture;
 class Preferences;
 class ImageViewer;
 class ChartWindow;
+class SlideShow;
 
 class LammpsGui : public QMainWindow {
     Q_OBJECT
@@ -84,6 +85,7 @@ private slots:
     void stop_run();
     void edit_variables();
     void render_image();
+    void view_slides();
     void view_image();
     void view_chart();
     void view_log();
@@ -107,6 +109,7 @@ private:
     LogWindow *logwindow;
     ImageViewer *imagewindow;
     ChartWindow *chartwindow;
+    SlideShow *slideshow;
     QTimer *logupdater;
     QLabel *dirstatus;
     QProgressBar *progress;
diff --git a/tools/lammps-gui/lammpsgui.qrc b/tools/lammps-gui/lammpsgui.qrc
index 31f997f05e..15ff13da4b 100644
--- a/tools/lammps-gui/lammpsgui.qrc
+++ b/tools/lammps-gui/lammpsgui.qrc
@@ -29,6 +29,7 @@
         <file>help-browser.png</file>
         <file>help-faq.png</file>
         <file>help_index.table</file>
+        <file>image-x-generic.png</file>
         <file>object-rotate-left.png</file>
         <file>object-rotate-right.png</file>
         <file>ovito.png</file>
diff --git a/tools/lammps-gui/lammpsgui.ui b/tools/lammps-gui/lammpsgui.ui
index 9ef6525f9b..d6264e48e4 100644
--- a/tools/lammps-gui/lammpsgui.ui
+++ b/tools/lammps-gui/lammpsgui.ui
@@ -93,6 +93,7 @@
     <addaction name="actionView_Log_Window"/>
     <addaction name="actionView_Graph_Window"/>
     <addaction name="actionView_Image_Window"/>
+    <addaction name="actionView_Slide_Show"/>
     <addaction name="actionView_Variable_Window"/>
    </widget>
    <addaction name="menuFile"/>
@@ -352,6 +353,17 @@
     <string>Ctrl+Shift+C</string>
    </property>
   </action>
+  <action name="actionView_Slide_Show">
+   <property name="icon">
+    <iconset theme=":/image-x-generic.png"/>
+   </property>
+   <property name="text">
+    <string>&amp;Slide Show Window</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+Shift+W</string>
+   </property>
+  </action>
   <action name="action_1">
    <property name="icon">
     <iconset theme=":/document-open-recent.png"/>
diff --git a/tools/lammps-gui/slideshow.cpp b/tools/lammps-gui/slideshow.cpp
new file mode 100644
index 0000000000..cc8c57d4f0
--- /dev/null
+++ b/tools/lammps-gui/slideshow.cpp
@@ -0,0 +1,190 @@
+/* ----------------------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#include "slideshow.h"
+#include "lammpswrapper.h"
+
+#include <QAction>
+#include <QDialogButtonBox>
+#include <QDir>
+#include <QFileDialog>
+#include <QGuiApplication>
+#include <QImage>
+#include <QImageReader>
+#include <QLabel>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QPalette>
+#include <QPoint>
+#include <QPushButton>
+#include <QScreen>
+#include <QScrollArea>
+#include <QScrollBar>
+#include <QSettings>
+#include <QStatusBar>
+#include <QVBoxLayout>
+#include <QWidgetAction>
+
+#include <cmath>
+
+static const QString blank(" ");
+
+SlideShow::SlideShow(const QString &fileName, LammpsWrapper *_lammps, QWidget *parent) :
+    QDialog(parent), imageLabel(new QLabel), scrollArea(new QScrollArea), menuBar(new QMenuBar),
+    lammps(_lammps)
+{
+    imageLabel->setBackgroundRole(QPalette::Base);
+    imageLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
+    imageLabel->setScaledContents(true);
+    imageLabel->minimumSizeHint();
+
+    scrollArea->setBackgroundRole(QPalette::Dark);
+    scrollArea->setWidget(imageLabel);
+    scrollArea->setVisible(false);
+
+    buttonBox = new QDialogButtonBox(QDialogButtonBox::Close);
+
+    connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
+    connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    QSettings settings;
+
+    mainLayout->addWidget(scrollArea);
+    mainLayout->addWidget(buttonBox);
+    setWindowTitle(QString("Slide Show: ") + QFileInfo(fileName).fileName());
+    createActions();
+
+    scaleFactor = 1.0;
+    resize(image.width() + 20, image.height() + 50);
+
+    scrollArea->setVisible(true);
+    fitToWindowAct->setEnabled(true);
+    updateActions();
+    if (!fitToWindowAct->isChecked()) imageLabel->adjustSize();
+    setLayout(mainLayout);
+}
+
+void SlideShow::saveAs()
+{
+    QString fileName = QFileDialog::getSaveFileName(this, "Save Image File As", QString(),
+                                                    "Image Files (*.jpg *.png *.bmp *.ppm)");
+    saveFile(fileName);
+}
+
+void SlideShow::copy() {}
+
+void SlideShow::zoomIn()
+{
+    scaleImage(1.25);
+}
+
+void SlideShow::zoomOut()
+{
+    scaleImage(0.8);
+}
+
+void SlideShow::normalSize()
+{
+    imageLabel->adjustSize();
+    scaleFactor = 1.0;
+}
+
+void SlideShow::fitToWindow()
+{
+    bool fitToWindow = fitToWindowAct->isChecked();
+    scrollArea->setWidgetResizable(fitToWindow);
+    if (!fitToWindow) normalSize();
+    updateActions();
+}
+
+void SlideShow::saveFile(const QString &fileName)
+{
+    if (!fileName.isEmpty()) image.save(fileName);
+}
+
+void SlideShow::createActions()
+{
+    QMenu *fileMenu = menuBar->addMenu("&File");
+
+    saveAsAct = fileMenu->addAction("&Save As...", this, &SlideShow::saveAs);
+    saveAsAct->setIcon(QIcon(":/document-save-as.png"));
+    saveAsAct->setEnabled(false);
+    fileMenu->addSeparator();
+    copyAct = fileMenu->addAction("&Copy", this, &SlideShow::copy);
+    copyAct->setIcon(QIcon(":/edit-copy.png"));
+    copyAct->setShortcut(QKeySequence::Copy);
+    copyAct->setEnabled(false);
+    fileMenu->addSeparator();
+    QAction *exitAct = fileMenu->addAction("&Close", this, &QWidget::close);
+    exitAct->setIcon(QIcon(":/window-close.png"));
+    exitAct->setShortcut(QKeySequence::fromString("Ctrl+W"));
+
+    QMenu *viewMenu = menuBar->addMenu("&View");
+
+    zoomInAct = viewMenu->addAction("Image Zoom &In (25%)", this, &SlideShow::zoomIn);
+    zoomInAct->setShortcut(QKeySequence::ZoomIn);
+    zoomInAct->setIcon(QIcon(":/gtk-zoom-in.png"));
+    zoomInAct->setEnabled(false);
+
+    zoomOutAct = viewMenu->addAction("Image Zoom &Out (25%)", this, &SlideShow::zoomOut);
+    zoomOutAct->setShortcut(QKeySequence::ZoomOut);
+    zoomOutAct->setIcon(QIcon(":/gtk-zoom-out.png"));
+    zoomOutAct->setEnabled(false);
+
+    normalSizeAct = viewMenu->addAction("&Reset Image Size", this, &SlideShow::normalSize);
+    normalSizeAct->setShortcut(QKeySequence::fromString("Ctrl+0"));
+    normalSizeAct->setIcon(QIcon(":/gtk-zoom-fit.png"));
+    normalSizeAct->setEnabled(false);
+
+    viewMenu->addSeparator();
+
+    fitToWindowAct = viewMenu->addAction("&Fit to Window", this, &SlideShow::fitToWindow);
+    fitToWindowAct->setEnabled(false);
+    fitToWindowAct->setCheckable(true);
+    fitToWindowAct->setShortcut(QKeySequence::fromString("Ctrl+="));
+}
+
+void SlideShow::updateActions()
+{
+    saveAsAct->setEnabled(!image.isNull());
+    copyAct->setEnabled(!image.isNull());
+    zoomInAct->setEnabled(!fitToWindowAct->isChecked());
+    zoomOutAct->setEnabled(!fitToWindowAct->isChecked());
+    normalSizeAct->setEnabled(!fitToWindowAct->isChecked());
+}
+
+void SlideShow::scaleImage(double factor)
+{
+    scaleFactor *= factor;
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
+    imageLabel->resize(scaleFactor * imageLabel->pixmap()->size());
+#else
+    imageLabel->resize(scaleFactor * imageLabel->pixmap(Qt::ReturnByValue).size());
+#endif
+
+    adjustScrollBar(scrollArea->horizontalScrollBar(), factor);
+    adjustScrollBar(scrollArea->verticalScrollBar(), factor);
+    zoomInAct->setEnabled(scaleFactor < 3.0);
+    zoomOutAct->setEnabled(scaleFactor > 0.333);
+}
+
+void SlideShow::adjustScrollBar(QScrollBar *scrollBar, double factor)
+{
+    scrollBar->setValue(
+        int(factor * scrollBar->value() + ((factor - 1) * scrollBar->pageStep() / 2)));
+}
+
+// Local Variables:
+// c-basic-offset: 4
+// End:
diff --git a/tools/lammps-gui/slideshow.h b/tools/lammps-gui/slideshow.h
new file mode 100644
index 0000000000..bde011e905
--- /dev/null
+++ b/tools/lammps-gui/slideshow.h
@@ -0,0 +1,76 @@
+/* -*- c++ -*- ----------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#ifndef SLIDESHOW_H
+#define SLIDESHOW_H
+
+#include <QComboBox>
+#include <QDialog>
+#include <QImage>
+#include <QString>
+
+class QAction;
+class QMenuBar;
+class QDialogButtonBox;
+class QLabel;
+class QObject;
+class QScrollArea;
+class QScrollBar;
+class QStatusBar;
+class LammpsWrapper;
+class QComboBox;
+
+class SlideShow : public QDialog {
+    Q_OBJECT
+
+public:
+    explicit SlideShow(const QString &fileName, LammpsWrapper *_lammps,
+                         QWidget *parent = nullptr);
+
+private slots:
+    void saveAs();
+    void copy();
+    void zoomIn();
+    void zoomOut();
+    void normalSize();
+    void fitToWindow();
+
+private:
+    void createActions();
+    void updateActions();
+    void saveFile(const QString &fileName);
+    void scaleImage(double factor);
+    void adjustScrollBar(QScrollBar *scrollBar, double factor);
+
+private:
+    QImage image;
+    QMenuBar *menuBar;
+    QLabel *imageLabel;
+    QScrollArea *scrollArea;
+    QDialogButtonBox *buttonBox;
+    double scaleFactor = 1.0;
+
+    QAction *saveAsAct;
+    QAction *copyAct;
+    QAction *zoomInAct;
+    QAction *zoomOutAct;
+    QAction *normalSizeAct;
+    QAction *fitToWindowAct;
+
+    LammpsWrapper *lammps;
+};
+#endif
+
+// Local Variables:
+// c-basic-offset: 4
+// End: