diff --git a/src/core/control/Control.cpp b/src/core/control/Control.cpp
index 8704161b944b..7739e5af16e4 100644
--- a/src/core/control/Control.cpp
+++ b/src/core/control/Control.cpp
@@ -1282,30 +1282,6 @@ void Control::customizeToolbars() {
     this->dragDropHandler->configure();
 }
 
-void Control::endDragDropToolbar() {
-    if (!this->dragDropHandler) {
-        return;
-    }
-
-    this->dragDropHandler->clearToolbarsFromDragAndDrop();
-}
-
-void Control::startDragDropToolbar() {
-    if (!this->dragDropHandler) {
-        return;
-    }
-
-    this->dragDropHandler->prepareToolbarsForDragAndDrop();
-}
-
-auto Control::isInDragAndDropToolbar() -> bool {
-    if (!this->dragDropHandler) {
-        return false;
-    }
-
-    return this->dragDropHandler->isInDragAndDrop();
-}
-
 void Control::setShapeTool(ActionType type, bool enabled) {
 
     if (this->toolHandler->getDrawingType() == DRAWING_TYPE_SPLINE && (type != ACTION_TOOL_DRAW_SPLINE || !enabled)) {
@@ -3142,13 +3118,9 @@ void Control::setClipboardHandlerSelection(EditSelection* selection) {
     }
 }
 
-void Control::addChangedDocumentListener(DocumentListener* dl) {
-    this->changedDocumentListeners.push_back(dl);
-}
+void Control::addChangedDocumentListener(DocumentListener* dl) { this->changedDocumentListeners.push_back(dl); }
 
-void Control::removeChangedDocumentListener(DocumentListener* dl) {
-    this->changedDocumentListeners.remove(dl);
-}
+void Control::removeChangedDocumentListener(DocumentListener* dl) { this->changedDocumentListeners.remove(dl); }
 
 void Control::setCopyCutEnabled(bool enabled) { this->clipboardHandler->setCopyCutEnabled(enabled); }
 
diff --git a/src/core/control/Control.h b/src/core/control/Control.h
index f5978df052d8..ff4f14b1eac8 100644
--- a/src/core/control/Control.h
+++ b/src/core/control/Control.h
@@ -184,10 +184,6 @@ class Control:
     void changePageBackgroundColor();
     void updateBackgroundSizeButton();
 
-    void endDragDropToolbar();
-    void startDragDropToolbar();
-    bool isInDragAndDropToolbar();
-
     /**
      * Loads the view mode (hide/show menu-,tool-&sidebar)
      */
diff --git a/src/core/control/FullscreenHandler.cpp b/src/core/control/FullscreenHandler.cpp
index bdc2c010767e..5ac84fba67c3 100644
--- a/src/core/control/FullscreenHandler.cpp
+++ b/src/core/control/FullscreenHandler.cpp
@@ -17,52 +17,14 @@ FullscreenHandler::~FullscreenHandler() = default;
 
 auto FullscreenHandler::isFullscreen() const -> bool { return this->fullscreen; }
 
-void FullscreenHandler::hideWidget(MainWindow* win, const std::string& widgetName) {
-    if ("sidebarContents" == widgetName && settings->isSidebarVisible()) {
-        this->sidebarHidden = true;
-        win->setSidebarVisible(false);
-
-        return;
-    }
-
-    if ("mainMenubar" == widgetName) {
-        // If the menu is hidden, shortcuts are not working anymore
-        // therefore the menu is not hidden, it's displayed, but invisible
-        // this costs 1px at the bottom, even if the preferred size is 0px,
-        // 1px is used by GTK
-
-        GtkWidget* mainMenubar = win->get("mainMenubar");
-        GtkWidget* mainBox = win->get("mainBox");
-
-        if (mainMenubar == nullptr || !gtk_widget_is_visible(mainMenubar)) {
-            // Menu not visible (global menu or something like this)
-            return;
-        }
-
-        // Remove menu from parent
-        gtk_container_remove(GTK_CONTAINER(gtk_widget_get_parent(mainMenubar)), mainMenubar);
-
-        GtkWidget* fix = gtk_invisible_new();
-
-        gtk_widget_set_size_request(fix, 0, 0);
-        gtk_fixed_put(GTK_FIXED(fix), mainMenubar, 0, 0);
-
-        gtk_widget_show(fix);
-
-        gtk_box_pack_end(GTK_BOX(mainBox), fix, false, false, 0);
-
-        menubarHidden = true;
-
-        return;
-    }
-}
-
 void FullscreenHandler::enableFullscreen(MainWindow* win) { gtk_window_fullscreen(GTK_WINDOW(win->getWindow())); }
 
 void FullscreenHandler::disableFullscreen(MainWindow* win) {
     gtk_window_unfullscreen(GTK_WINDOW(win->getWindow()));
 
-    for (GtkWidget* w: hiddenFullscreenWidgets) { gtk_widget_show(w); }
+    for (GtkWidget* w: hiddenFullscreenWidgets) {
+        gtk_widget_show(w);
+    }
     hiddenFullscreenWidgets.clear();
 
     if (this->sidebarHidden) {
@@ -165,5 +127,3 @@ auto gtk_invisible_get_type() -> GType {
 
     return gtk_invisible_menu_type;
 }
-
-auto gtk_invisible_new() -> GtkWidget* { return GTK_WIDGET(g_object_new(gtk_invisible_get_type(), nullptr)); }
diff --git a/src/core/control/FullscreenHandler.h b/src/core/control/FullscreenHandler.h
index 035be7374391..f222a0c9ad9d 100644
--- a/src/core/control/FullscreenHandler.h
+++ b/src/core/control/FullscreenHandler.h
@@ -31,7 +31,6 @@ class FullscreenHandler {
 
 private:
     void enableFullscreen(MainWindow* win);
-    void hideWidget(MainWindow* win, const std::string& widgetName);
     void disableFullscreen(MainWindow* win);
 
 private:
diff --git a/src/core/control/PdfCache.cpp b/src/core/control/PdfCache.cpp
index 60b088762a6f..72aaf6a2c231 100644
--- a/src/core/control/PdfCache.cpp
+++ b/src/core/control/PdfCache.cpp
@@ -56,8 +56,6 @@ void PdfCache::updateSettings(Settings* settings) {
     }
 }
 
-void PdfCache::clearCache() { this->data.clear(); }
-
 auto PdfCache::lookup(size_t pdfPageNo) const -> const PdfCacheEntry* {
     for (auto& e: this->data) {
         if (static_cast<size_t>(e->popplerPage->getPageId()) == pdfPageNo) {
diff --git a/src/core/control/PdfCache.h b/src/core/control/PdfCache.h
index 4ca74c3aaebb..dbac9847a375 100644
--- a/src/core/control/PdfCache.h
+++ b/src/core/control/PdfCache.h
@@ -45,13 +45,8 @@ class PdfCache {
      * @param pageWidth/pageHeight Xournal++ page dimensions
      */
     void render(cairo_t* cr, size_t pdfPageNo, double zoom, double pageWidth, double pageHeight);
-    /**
-     * @brief Empty the cache
-     */
-    void clearCache();
 
 public:
-
     /**
      * @brief Set the maximum tolerable zoom difference, as a percentage.
      *
diff --git a/src/core/control/settings/Settings.cpp b/src/core/control/settings/Settings.cpp
index 7ae06fca71e4..65bb23fed911 100644
--- a/src/core/control/settings/Settings.cpp
+++ b/src/core/control/settings/Settings.cpp
@@ -20,9 +20,9 @@
 #include "gui/toolbarMenubar/model/ColorPalette.h"  // for Palette
 #include "model/FormatDefinitions.h"                // for FormatUnits, XOJ_...
 #include "util/Color.h"
-#include "util/PathUtil.h"                          // for getConfigFile
-#include "util/Util.h"                              // for PRECISION_FORMAT_...
-#include "util/i18n.h"                              // for _
+#include "util/PathUtil.h"  // for getConfigFile
+#include "util/Util.h"      // for PRECISION_FORMAT_...
+#include "util/i18n.h"      // for _
 
 #include "ButtonConfig.h"  // for ButtonConfig
 #include "config-dev.h"    // for PALETTE_FILE
@@ -144,30 +144,31 @@ void Settings::loadDefault() {
     this->defaultPdfExportName = _("%{name}_annotated");
 
     // Eraser
-    this->buttonConfig[BUTTON_ERASER] =
-            std::make_unique<ButtonConfig>(TOOL_ERASER, Colors::black, TOOL_SIZE_NONE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_ERASER] = std::make_unique<ButtonConfig>(TOOL_ERASER, Colors::black, TOOL_SIZE_NONE,
+                                                                       DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
     // Middle button
-    this->buttonConfig[BUTTON_MOUSE_MIDDLE] =
-            std::make_unique<ButtonConfig>(TOOL_HAND, Colors::black, TOOL_SIZE_NONE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_MOUSE_MIDDLE] = std::make_unique<ButtonConfig>(TOOL_HAND, Colors::black, TOOL_SIZE_NONE,
+                                                                             DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
     // Right button
-    this->buttonConfig[BUTTON_MOUSE_RIGHT] =
-            std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_MOUSE_RIGHT] = std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE,
+                                                                            DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
     // Touch
-    this->buttonConfig[BUTTON_TOUCH] =
-            std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_TOUCH] = std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE,
+                                                                      DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
     // Default config
-    this->buttonConfig[BUTTON_DEFAULT] =
-            std::make_unique<ButtonConfig>(TOOL_PEN, Colors::black, TOOL_SIZE_FINE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_DEFAULT] = std::make_unique<ButtonConfig>(TOOL_PEN, Colors::black, TOOL_SIZE_FINE,
+                                                                        DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
     // Pen button 1
-    this->buttonConfig[BUTTON_STYLUS_ONE] =
-            std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_STYLUS_ONE] = std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE,
+                                                                           DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
     // Pen button 2
-    this->buttonConfig[BUTTON_STYLUS_TWO] =
-            std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE, DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
+    this->buttonConfig[BUTTON_STYLUS_TWO] = std::make_unique<ButtonConfig>(TOOL_NONE, Colors::black, TOOL_SIZE_NONE,
+                                                                           DRAWING_TYPE_DEFAULT, ERASER_TYPE_NONE);
 
     // default view modes
     this->activeViewMode = PresetViewModeIds::VIEW_MODE_DEFAULT;
-    this->viewModes = std::vector<ViewMode>{VIEW_MODE_STRUCT_DEFAULT, VIEW_MODE_STRUCT_FULLSCREEN, VIEW_MODE_STRUCT_PRESENTATION};
+    this->viewModes =
+            std::vector<ViewMode>{VIEW_MODE_STRUCT_DEFAULT, VIEW_MODE_STRUCT_FULLSCREEN, VIEW_MODE_STRUCT_PRESENTATION};
 
     this->touchZoomStartThreshold = 0.0;
 
@@ -240,9 +241,7 @@ auto Settings::loadViewMode(ViewModeId mode) -> bool {
     return true;
 }
 
-auto Settings::getViewModes() const -> const std::vector<ViewMode>& {
-    return this->viewModes;
-}
+auto Settings::getViewModes() const -> const std::vector<ViewMode>& { return this->viewModes; }
 
 /**
  * tempg_ascii_strtod
@@ -472,11 +471,14 @@ void Settings::parseItem(xmlDocPtr doc, xmlNodePtr cur) {
     } else if (xmlStrcmp(name, reinterpret_cast<const xmlChar*>("autosaveTimeout")) == 0) {
         this->autosaveTimeout = g_ascii_strtoll(reinterpret_cast<const char*>(value), nullptr, 10);
     } else if (xmlStrcmp(name, reinterpret_cast<const xmlChar*>("defaultViewModeAttributes")) == 0) {
-        this->viewModes.at(PresetViewModeIds::VIEW_MODE_DEFAULT) = settingsStringToViewMode(reinterpret_cast<const char*>(value));
+        this->viewModes.at(PresetViewModeIds::VIEW_MODE_DEFAULT) =
+                settingsStringToViewMode(reinterpret_cast<const char*>(value));
     } else if (xmlStrcmp(name, reinterpret_cast<const xmlChar*>("fullscreenViewModeAttributes")) == 0) {
-        this->viewModes.at(PresetViewModeIds::VIEW_MODE_FULLSCREEN) = settingsStringToViewMode(reinterpret_cast<const char*>(value));
+        this->viewModes.at(PresetViewModeIds::VIEW_MODE_FULLSCREEN) =
+                settingsStringToViewMode(reinterpret_cast<const char*>(value));
     } else if (xmlStrcmp(name, reinterpret_cast<const xmlChar*>("presentationViewModeAttributes")) == 0) {
-        this->viewModes.at(PresetViewModeIds::VIEW_MODE_PRESENTATION) = settingsStringToViewMode(reinterpret_cast<const char*>(value));
+        this->viewModes.at(PresetViewModeIds::VIEW_MODE_PRESENTATION) =
+                settingsStringToViewMode(reinterpret_cast<const char*>(value));
     } else if (xmlStrcmp(name, reinterpret_cast<const xmlChar*>("touchZoomStartThreshold")) == 0) {
         this->touchZoomStartThreshold = g_ascii_strtod(reinterpret_cast<const char*>(value), nullptr);
     } else if (xmlStrcmp(name, reinterpret_cast<const xmlChar*>("pageRerenderThreshold")) == 0) {
@@ -936,7 +938,8 @@ void Settings::save() {
 
     auto defaultViewModeAttributes = viewModeToSettingsString(viewModes.at(PresetViewModeIds::VIEW_MODE_DEFAULT));
     auto fullscreenViewModeAttributes = viewModeToSettingsString(viewModes.at(PresetViewModeIds::VIEW_MODE_FULLSCREEN));
-    auto presentationViewModeAttributes = viewModeToSettingsString(viewModes.at(PresetViewModeIds::VIEW_MODE_PRESENTATION));
+    auto presentationViewModeAttributes =
+            viewModeToSettingsString(viewModes.at(PresetViewModeIds::VIEW_MODE_PRESENTATION));
     SAVE_STRING_PROP(defaultViewModeAttributes);
     ATTACH_COMMENT("Which GUI elements are shown in default view mode, separated by a colon (,)");
     SAVE_STRING_PROP(fullscreenViewModeAttributes);
@@ -948,7 +951,8 @@ void Settings::save() {
     ATTACH_COMMENT("The cursor icon used with a stylus, allowed values are \"none\", \"dot\", \"big\", \"arrow\"");
 
     xmlNode = saveProperty("eraserVisibility", eraserVisibilityToString(this->eraserVisibility), root);
-    ATTACH_COMMENT("The eraser cursor visibility used with a stylus, allowed values are \"never\", \"always\", \"hover\", \"touch\"");
+    ATTACH_COMMENT("The eraser cursor visibility used with a stylus, allowed values are \"never\", \"always\", "
+                   "\"hover\", \"touch\"");
 
     xmlNode = saveProperty("iconTheme", iconThemeToString(this->iconTheme), root);
     ATTACH_COMMENT("The icon theme, allowed values are \"iconsColor\", \"iconsLucide\"");
@@ -1614,7 +1618,9 @@ void Settings::setPresentationMode(bool presentationMode) {
     save();
 }
 
-auto Settings::isPresentationMode() const -> bool { return this->activeViewMode == PresetViewModeIds::VIEW_MODE_PRESENTATION; }
+auto Settings::isPresentationMode() const -> bool {
+    return this->activeViewMode == PresetViewModeIds::VIEW_MODE_PRESENTATION;
+}
 
 void Settings::setPressureSensitivity(gboolean presureSensitivity) {
     if (this->pressureSensitivity == presureSensitivity) {
@@ -1810,10 +1816,6 @@ auto Settings::areStockIconsUsed() const -> bool { return this->useStockIcons; }
 
 auto Settings::isFullscreen() const -> bool { return this->fullscreenActive; }
 
-void Settings::setIsFullscreen(bool isFullscreen) {
-    this->fullscreenActive = isFullscreen;
-}
-
 auto Settings::isSidebarVisible() const -> bool { return this->showSidebar; }
 
 void Settings::setSidebarVisible(bool visible) {
@@ -1883,9 +1885,7 @@ auto Settings::getButtonConfig(unsigned int id) -> ButtonConfig* {
     return this->buttonConfig[id].get();
 }
 
-void Settings::setViewMode(ViewModeId mode, ViewMode viewMode) {
-    viewModes.at(mode) = viewMode;
-}
+void Settings::setViewMode(ViewModeId mode, ViewMode viewMode) { viewModes.at(mode) = viewMode; }
 
 auto Settings::getTouchZoomStartThreshold() const -> double { return this->touchZoomStartThreshold; }
 void Settings::setTouchZoomStartThreshold(double threshold) {
diff --git a/src/core/control/settings/Settings.h b/src/core/control/settings/Settings.h
index 433fdf1f70e4..11ececb92836 100644
--- a/src/core/control/settings/Settings.h
+++ b/src/core/control/settings/Settings.h
@@ -11,13 +11,13 @@
 
 #pragma once
 
+#include <array>    // for array
 #include <cstddef>  // for size_t
 #include <map>      // for map
 #include <memory>   // for make_shared, shared_ptr
 #include <string>   // for string, basic_string
 #include <utility>  // for pair
 #include <vector>   // for vector
-#include <array>    // for array
 
 #include <gdk/gdk.h>                      // for GdkInputSource, GdkD...
 #include <glib.h>                         // for gchar, gboolean, gint
@@ -30,8 +30,8 @@
 
 #include "LatexSettings.h"  // for LatexSettings
 #include "SettingsEnums.h"  // for InputDeviceTypeOption
-#include "filesystem.h"     // for path
 #include "ViewModes.h"      // for ViewModes
+#include "filesystem.h"     // for path
 
 struct Palette;
 
@@ -211,7 +211,6 @@ class Settings {
     bool isMainWndMaximized() const;
 
     bool isFullscreen() const;
-    void setIsFullscreen(bool isFullscreen);
 
     bool isSidebarVisible() const;
     void setSidebarVisible(bool visible);
diff --git a/src/core/gui/LegacyRedrawable.h b/src/core/gui/LegacyRedrawable.h
index 06df3e4cd27a..a03335f88757 100644
--- a/src/core/gui/LegacyRedrawable.h
+++ b/src/core/gui/LegacyRedrawable.h
@@ -46,7 +46,7 @@ class [[deprecated]] LegacyRedrawable {
      * for refreshing the view buffer (if you have changed the document) call rerender.
      */
     virtual void repaintArea(double x1, double y1, double x2, double y2) const = 0;
-    void repaintRect(double x, double y, double width, double height) const;
+    [[maybe_unused]] void repaintRect(double x, double y, double width, double height) const;
     [[maybe_unused]] void repaintElement(Element* e) const;
 
     /**
diff --git a/src/core/gui/MainWindow.h b/src/core/gui/MainWindow.h
index 54509e7d44f4..b406f5ae4d80 100644
--- a/src/core/gui/MainWindow.h
+++ b/src/core/gui/MainWindow.h
@@ -112,9 +112,7 @@ class MainWindow: public GladeGui, public LayerCtrlListener {
 
     Layout* getLayout() const;
 
-    bool isGestureActive() const;
-
-    Menubar* getMenubar() const;
+    [[maybe_unused]] Menubar* getMenubar() const;
 
     /**
      * Disable kinetic scrolling if there is a touchscreen device that was manually mapped to another enabled input
diff --git a/src/core/gui/PageView.cpp b/src/core/gui/PageView.cpp
index 4a1fd264fc2a..1ec4fbc89a7d 100644
--- a/src/core/gui/PageView.cpp
+++ b/src/core/gui/PageView.cpp
@@ -304,8 +304,9 @@ auto XojPageView::onButtonPressEvent(const PositionInputData& pos) -> bool {
         auto* zoomControl = this->getXournal()->getControl()->getZoomControl();
         this->verticalSpace = std::make_unique<VerticalToolHandler>(this->page, this->settings, y, pos.isControlDown());
         this->overlayViews.emplace_back(this->verticalSpace->createView(this, zoomControl, this->settings));
-    } else if (h->getToolType() == TOOL_SELECT_RECT || h->getToolType() == TOOL_SELECT_REGION || h->getToolType() == TOOL_SELECT_MULTILAYER_RECT ||
-               h->getToolType() == TOOL_SELECT_MULTILAYER_REGION || h->getToolType() == TOOL_PLAY_OBJECT || h->getToolType() == TOOL_SELECT_OBJECT ||
+    } else if (h->getToolType() == TOOL_SELECT_RECT || h->getToolType() == TOOL_SELECT_REGION ||
+               h->getToolType() == TOOL_SELECT_MULTILAYER_RECT || h->getToolType() == TOOL_SELECT_MULTILAYER_REGION ||
+               h->getToolType() == TOOL_PLAY_OBJECT || h->getToolType() == TOOL_SELECT_OBJECT ||
                h->getToolType() == TOOL_SELECT_PDF_TEXT_LINEAR || h->getToolType() == TOOL_SELECT_PDF_TEXT_RECT) {
         if (h->getToolType() == TOOL_SELECT_RECT) {
             if (!selection) {
@@ -778,8 +779,6 @@ void XojPageView::deleteOverlayView(xoj::view::OverlayView* v, const Range& rg)
     }
 }
 
-int XojPageView::getDPIScaling() const { return xournal->getDpiScaleFactor(); }
-
 double XojPageView::getZoom() const { return xournal->getZoom(); }
 
 ZoomControl* XojPageView::getZoomControl() const { return this->getXournal()->getControl()->getZoomControl(); }
diff --git a/src/core/gui/PageView.h b/src/core/gui/PageView.h
index 89699f292e6e..4879b4e33ba7 100644
--- a/src/core/gui/PageView.h
+++ b/src/core/gui/PageView.h
@@ -50,7 +50,7 @@ class XojPdfPage;
 namespace xoj::view {
 class OverlayView;
 class ToolView;
-}
+}  // namespace xoj::view
 
 class XojPageView: public LegacyRedrawable, public PageListener, public xoj::view::Repaintable {
 public:
@@ -78,7 +78,6 @@ class XojPageView: public LegacyRedrawable, public PageListener, public xoj::vie
      */
     void deleteOverlayView(xoj::view::OverlayView* v, const Range& rg) override;
 
-    int getDPIScaling() const override;
     double getZoom() const override;
     ZoomControl* getZoomControl() const override;
     Range getVisiblePart() const override;
diff --git a/src/core/gui/dialog/SettingsDialog.h b/src/core/gui/dialog/SettingsDialog.h
index e9df9235fb2e..dc6d5f5e9d10 100644
--- a/src/core/gui/dialog/SettingsDialog.h
+++ b/src/core/gui/dialog/SettingsDialog.h
@@ -47,7 +47,7 @@ class SettingsDialog: public GladeGui {
      * Set active regions
      */
     void enableWithCheckbox(const std::string& checkbox, const std::string& widget);
-    void disableWithCheckbox(const std::string& checkbox, const std::string& widget);
+    [[maybe_unused]] void disableWithCheckbox(const std::string& checkbox, const std::string& widget);
 
     /*
      * Listeners for changes to settings.
diff --git a/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.cpp b/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.cpp
index 15ee577f9e3a..46ce8062aba2 100644
--- a/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.cpp
+++ b/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.cpp
@@ -55,5 +55,3 @@ void ToolbarDragDropHandler::configure() {
 
     this->customizeDialog->show(GTK_WINDOW(win->getWindow()));
 }
-
-auto ToolbarDragDropHandler::isInDragAndDrop() -> bool { return !this->toolbars.empty(); }
diff --git a/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.h b/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.h
index f1daf98d503e..29accc6fcd25 100644
--- a/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.h
+++ b/src/core/gui/dialog/toolbarCustomize/ToolbarDragDropHandler.h
@@ -28,8 +28,6 @@ class ToolbarDragDropHandler {
 
     void toolbarConfigDialogClosed();
 
-    bool isInDragAndDrop();
-
 public:
     void prepareToolbarsForDragAndDrop();
     void clearToolbarsFromDragAndDrop();
diff --git a/src/core/gui/scroll/ScrollHandling.cpp b/src/core/gui/scroll/ScrollHandling.cpp
index 6adf1132d840..3871f2334a5f 100644
--- a/src/core/gui/scroll/ScrollHandling.cpp
+++ b/src/core/gui/scroll/ScrollHandling.cpp
@@ -39,7 +39,3 @@ void ScrollHandling::setLayoutSize(int width, int height) {
     }
 #endif
 }
-
-auto ScrollHandling::getPreferredWidth() -> int { return layout->getMinimalWidth(); }
-
-auto ScrollHandling::getPreferredHeight() -> int { return layout->getMinimalHeight(); }
diff --git a/src/core/gui/scroll/ScrollHandling.h b/src/core/gui/scroll/ScrollHandling.h
index eb3d3a278eea..01a83eea89fc 100644
--- a/src/core/gui/scroll/ScrollHandling.h
+++ b/src/core/gui/scroll/ScrollHandling.h
@@ -29,9 +29,6 @@ class ScrollHandling {
 
     void setLayoutSize(int width, int height);
 
-    int getPreferredWidth();
-    int getPreferredHeight();
-
 private:
 protected:
     GtkAdjustment* adjHorizontal = nullptr;
diff --git a/src/core/gui/toolbarMenubar/ToolMenuHandler.h b/src/core/gui/toolbarMenubar/ToolMenuHandler.h
index fc0f364e6cb5..cb2463e3083d 100644
--- a/src/core/gui/toolbarMenubar/ToolMenuHandler.h
+++ b/src/core/gui/toolbarMenubar/ToolMenuHandler.h
@@ -86,7 +86,7 @@ class ToolMenuHandler {
 
     void setTmpDisabled(bool disabled);
 
-    void removeColorToolItem(AbstractToolItem* it);
+    [[maybe_unused]] void removeColorToolItem(AbstractToolItem* it);
     void addColorToolItem(AbstractToolItem* it);
 
     ToolbarModel* getModel();
@@ -96,7 +96,7 @@ class ToolMenuHandler {
 
     Control* getControl();
 
-    bool isColorInUse(Color color);
+    [[maybe_unused]] bool isColorInUse(Color color);
 
     void disableAudioPlaybackButtons();
 
diff --git a/src/core/model/Image.h b/src/core/model/Image.h
index c1a021d0c29d..167d7941fdd2 100644
--- a/src/core/model/Image.h
+++ b/src/core/model/Image.h
@@ -72,7 +72,7 @@ class Image: public Element {
     /// Return the size of the raw image, or (-1, -1) if the image has not been rendered yet.
     std::pair<int, int> getImageSize() const;
 
-    GdkPixbufFormat* getImageFormat() const;
+    [[maybe_unused]] GdkPixbufFormat* getImageFormat() const;
 
     static constexpr std::pair<int, int> NOSIZE = std::make_pair(-1, -1);
 
diff --git a/src/core/model/Snapping.cpp b/src/core/model/Snapping.cpp
index 4804b5174ea5..f151a1c23b70 100644
--- a/src/core/model/Snapping.cpp
+++ b/src/core/model/Snapping.cpp
@@ -60,22 +60,4 @@ double distanceLine(Point const& pos, Point const& first, Point const& second) {
     }
 }
 
-Point snapToLine(Point const& pos, Point const& first, Point const& second, double tolerance) {
-    if (first.x == second.x && first.y == second.y) {
-        return distance(pos, first) > tolerance ? pos : first;
-    }
-    const double dist = distanceLine(pos, first, second);
-    const double dist1 = distance(pos, first);
-    const double dist2 = distance(pos, second);
-    const double distance = std::min({dist, dist1, dist2});
-    if (distance > tolerance) {
-        return pos;
-    } else if (distance == dist1) {
-        return first;
-    } else if (distance == dist2) {
-        return second;
-    } else {
-        return projToLine(pos, first, second);
-    }
-}
 }  // namespace Snapping
diff --git a/src/core/model/Snapping.h b/src/core/model/Snapping.h
index 1d767ee0932a..2797afc0b95c 100644
--- a/src/core/model/Snapping.h
+++ b/src/core/model/Snapping.h
@@ -74,12 +74,4 @@ namespace Snapping {
  */
 [[nodiscard]] double distanceLine(Point const& pos, Point const& first, Point const& second);
 
-/**
- * @brief Snaps a given point to the closest point on a line segment specified by its end points
- * @param pos the given point
- * @param first the first end point of the line segement
- * @param second the second end point of the line segment
- * @param tolerance the tolerance (in pt)
- */
-[[nodiscard]] Point snapToLine(Point const& pos, Point const& first, Point const& second, double tolerance);
 }  // namespace Snapping
diff --git a/src/core/model/Stroke.h b/src/core/model/Stroke.h
index 8fcdda56f1e9..93d6317a1250 100644
--- a/src/core/model/Stroke.h
+++ b/src/core/model/Stroke.h
@@ -129,7 +129,7 @@ class Stroke: public AudioElement {
     void setPointVectorInternal(const Range* const snappingBox);
 
 public:
-    void deletePoint(int index);
+    [[maybe_unused]] void deletePoint(int index);
     void deletePointsFrom(size_t index);
 
     void setToolType(StrokeTool type);
diff --git a/src/core/view/Repaintable.h b/src/core/view/Repaintable.h
index 90faf9555a91..14c880f2e335 100644
--- a/src/core/view/Repaintable.h
+++ b/src/core/view/Repaintable.h
@@ -36,8 +36,6 @@ class Repaintable {
      */
     virtual Range getVisiblePart() const = 0;
 
-    virtual int getDPIScaling() const = 0;
-
     // Get the current zoom.
     virtual double getZoom() const = 0;
     virtual ZoomControl* getZoomControl() const = 0;