diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp b/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
index c52838cd..534cc784 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
@@ -154,7 +154,7 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key key, bool down) {
 		m_subsheetEditor.close();
 		m_exportMenu.close();
 	}
-	auto const popupOpen = m_subsheetEditor.isOpen() && m_exportMenu.isOpen();
+	auto const popupOpen = m_subsheetEditor.isOpen() || m_exportMenu.isOpen();
 	auto const pal = m_model.pal();
 	if (!popupOpen) {
 		auto const colorCnt = core::colorCnt(pal, m_model.palettePage());
@@ -200,6 +200,17 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key key, bool down) {
 }
 
 void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
+	auto const popupOpen = m_subsheetEditor.isOpen() || m_exportMenu.isOpen();
+	if (!popupOpen && m_tool == TileSheetTool::Select) {
+		if (ImGui::IsKeyPressed(ImGuiKey_ModCtrl)) {
+			if (ImGui::IsKeyPressed(ImGuiKey_A)) {
+				auto const&img = m_model.activeSubSheet();
+				m_model.setSelection({{}, {img.columns * TileWidth, img.rows * TileHeight}});
+			} else if (ImGui::IsKeyPressed(ImGuiKey_G)) {
+				m_model.clearSelection();
+			}
+		}
+	}
 	auto const paneSize = ImGui::GetContentRegionAvail();
 	auto const tileSheetParentSize = ImVec2(paneSize.x - m_palViewWidth, paneSize.y);
 	auto const fbSize = ox::Vec2(tileSheetParentSize.x - 16, tileSheetParentSize.y - 16);
@@ -209,10 +220,10 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 	}
 	ImGui::EndChild();
 	ImGui::SameLine();
-	ImGui::BeginChild("Controls", ImVec2(m_palViewWidth - 8, paneSize.y), true);
+	ImGui::BeginChild("Controls", {m_palViewWidth - 8, paneSize.y}, true);
 	{
 		auto const controlsSize = ImGui::GetContentRegionAvail();
-		ImGui::BeginChild("ToolBox", ImVec2(m_palViewWidth - 24, 30), true);
+		ImGui::BeginChild("ToolBox", {m_palViewWidth - 24, 30}, true);
 		{
 			auto const btnSz = ImVec2(45, 14);
 			if (ImGui::Selectable("Select", m_tool == TileSheetTool::Select, 0, btnSz)) {
@@ -232,15 +243,15 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 		ImGui::EndChild();
 		auto const ySize = controlsSize.y - 38;
 		// draw palette/color picker
-		ImGui::BeginChild("Palette", ImVec2(m_palViewWidth - 24, ySize / 2.f), true);
+		ImGui::BeginChild("Palette", {m_palViewWidth - 24, ySize / 2.f}, true);
 		{
 			drawPaletteSelector();
 		}
 		ImGui::EndChild();
-		ImGui::BeginChild("SubSheets", ImVec2(m_palViewWidth - 24, ySize / 2.f), true);
+		ImGui::BeginChild("SubSheets", {m_palViewWidth - 24, ySize / 2.f}, true);
 		{
 			static constexpr auto btnHeight = ig::BtnSz.y;
-			auto const btnSize = ImVec2(btnHeight, btnHeight);
+			auto const btnSize = ImVec2{btnHeight, btnHeight};
 			if (ig::PushButton("+", btnSize)) {
 				auto insertOnIdx = m_model.activeSubSheetIdx();
 				auto const&parent = m_model.activeSubSheet();
diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.cpp b/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.cpp
index f94d68d1..be546eac 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.cpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.cpp
@@ -214,10 +214,14 @@ void TileSheetEditorModel::fill(ox::Point const&pt, int palIdx) noexcept {
 	}
 }
 
+void TileSheetEditorModel::setSelection(studio::Selection const&sel) noexcept {
+	m_selection.emplace(sel);
+	m_updated = true;
+}
+
 void TileSheetEditorModel::select(ox::Point const&pt) noexcept {
 	if (m_selTracker.updateCursorPoint(pt)) {
-		m_selection.emplace(m_selTracker.selection());
-		m_updated = true;
+		setSelection(m_selTracker.selection());
 	}
 }
 
@@ -234,6 +238,7 @@ void TileSheetEditorModel::completeSelection() noexcept {
 
 void TileSheetEditorModel::clearSelection() noexcept {
 	m_updated = true;
+	m_selTracker.reset();
 	m_selection.reset();
 }
 
diff --git a/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.hpp b/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.hpp
index 496bc96b..b3b508cc 100644
--- a/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.hpp
+++ b/src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditormodel.hpp
@@ -103,6 +103,8 @@ class TileSheetEditorModel: public ox::SignalHandler {
 
 		void fill(ox::Point const&pt, int palIdx) noexcept;
 
+		void setSelection(studio::Selection const&sel) noexcept;
+
 		void select(ox::Point const&pt) noexcept;
 
 		void completeSelection() noexcept;
diff --git a/src/olympic/studio/modlib/include/studio/selectiontracker.hpp b/src/olympic/studio/modlib/include/studio/selectiontracker.hpp
index ad6882bc..776b6b99 100644
--- a/src/olympic/studio/modlib/include/studio/selectiontracker.hpp
+++ b/src/olympic/studio/modlib/include/studio/selectiontracker.hpp
@@ -111,6 +111,10 @@ class SelectionTracker {
 					allowStart);
 		}
 
+		constexpr void reset() noexcept {
+			m_selectionOngoing = {};
+		}
+
 		constexpr void finishSelection() noexcept {
 			m_selectionOngoing = {};
 		}