diff --git a/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.cpp b/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.cpp
index 4eff3854..03f510ba 100644
--- a/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.cpp
@@ -14,6 +14,7 @@
 
 #include "export-tilesheet.hpp"
 
+#include "nostalgia/gfx/tilesheet.hpp"
 #include "studio/context.hpp"
 
 
@@ -71,6 +72,32 @@ static ox::Error toPngFile(
 					8)));
 }
 
+ox::Error exportSubsheetToPng(
+	TileSheet::SubSheet const &s,
+	Palette const &pal,
+	size_t const palPage,
+	ox::CStringViewCR dstPath,
+	int const scale) noexcept {
+	// subsheet to png
+	auto const width = s.columns * TileWidth;
+	auto const height = s.rows * TileHeight;
+	auto const err = toPngFile(
+			dstPath,
+			normalizePixelArrangement(
+				normalizePixelSizes(s.pixels),
+				s.columns,
+				scale),
+			pal,
+			palPage,
+			static_cast<unsigned>(width * scale),
+			static_cast<unsigned>(height * scale));
+	if (err) {
+		oxErrorf("TileSheet export failed: {}", toStr(err));
+		return ox::Error{7, "TileSheet export failed"};
+	}
+	return {};
+}
+
 ox::Error exportSubsheetToPng(
 	TileSheet const &src,
 	Palette const &pal,
@@ -84,23 +111,12 @@ ox::Error exportSubsheetToPng(
 	if (ssErr) {
 		return ox::Error{6, "failed to find SubSheet"};
 	}
-	auto const width = s->columns * TileWidth;
-	auto const height = s->rows * TileHeight;
-	auto const err = toPngFile(
-			dstPath,
-			normalizePixelArrangement(
-				normalizePixelSizes(s->pixels),
-				s->columns,
-				scale),
-			pal,
-			palPage,
-			static_cast<unsigned>(width * scale),
-			static_cast<unsigned>(height * scale));
-	if (err) {
-		oxErrorf("TileSheet export failed: {}", toStr(err));
-		return ox::Error{7, "TileSheet export failed"};
-	}
-	return {};
+	return exportSubsheetToPng(
+		*s,
+		pal,
+		palPage,
+		dstPath,
+		scale);
 }
 
 ox::Error cmdExportTilesheet(studio::Project &project, ox::SpanView<ox::CString> const args) noexcept {
@@ -120,7 +136,7 @@ ox::Error cmdExportTilesheet(studio::Project &project, ox::SpanView<ox::CString>
 	OX_REQUIRE(srcPath, clargs.getString("src-path").transformError(1, "no src path specified"));
 	OX_REQUIRE(dstPath, clargs.getString("dst-path").transformError(2, "no dst path specified"));
 	auto const palPath = clargs.getString("pal-path", "");
-	auto const subsheetPath = clargs.getString("subsheet-path").or_value({});
+	auto const subsheetPath = clargs.getString("subsheet-path").or_value(ox::String{"Root"});
 	auto const palPage = static_cast<size_t>(clargs.getInt("pal-page", 0));
 	auto const scale = clargs.getInt("scale", 1);
 	showUsage = false;
diff --git a/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.hpp b/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.hpp
index 0224619f..ee0faf2d 100644
--- a/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.hpp
+++ b/src/nostalgia/modules/gfx/src/studio/subcommands/export-tilesheet/export-tilesheet.hpp
@@ -8,6 +8,13 @@
 
 namespace nostalgia::gfx {
 
+ox::Error exportSubsheetToPng(
+	TileSheet::SubSheet const &s,
+	Palette const &pal,
+	size_t palPage,
+	ox::CStringViewCR dstPath,
+	int scale) noexcept;
+
 ox::Error exportSubsheetToPng(
 	TileSheet const &src,
 	Palette const &pal,
diff --git a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
index 6640c1eb..b894d984 100644
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
@@ -11,6 +11,7 @@
 
 #include <nostalgia/gfx/studio.hpp>
 
+#include "../subcommands/export-tilesheet/export-tilesheet.hpp"
 #include "tilesheeteditor-imgui.hpp"
 
 namespace nostalgia::gfx {
@@ -37,58 +38,6 @@ OX_MODEL_BEGIN(TileSheetEditorConfig)
 	OX_MODEL_FIELD_RENAME(activeSubsheet, active_subsheet)
 OX_MODEL_END()
 
-static ox::Vector<uint32_t> normalizePixelSizes(
-		ox::Vector<uint8_t> const &inPixels) noexcept {
-	ox::Vector<uint32_t> outPixels;
-	outPixels.reserve(inPixels.size());
-	outPixels.resize(inPixels.size());
-	for (std::size_t i = 0; i < inPixels.size(); ++i) {
-		outPixels[i] = inPixels[i];
-	}
-	return outPixels;
-}
-
-static ox::Vector<uint32_t> normalizePixelArrangement(
-		ox::Vector<uint32_t> const &inPixels,
-		int const cols,
-		int const scale) {
-	auto const scalePt = ox::Point{scale, scale};
-	auto const width = cols * TileWidth;
-	auto const height = static_cast<int>(inPixels.size()) / width;
-	auto const dstWidth = width * scale;
-	ox::Vector<uint32_t> outPixels(static_cast<size_t>((width * scale) * (height * scale)));
-	for (std::size_t dstIdx = 0; dstIdx < outPixels.size(); ++dstIdx) {
-		auto const dstPt = ox::Point{
-			static_cast<int>(dstIdx) % dstWidth,
-			static_cast<int>(dstIdx) / dstWidth};
-		auto const srcPt = dstPt / scalePt;
-		auto const srcIdx = ptToIdx(srcPt, cols);
-		outPixels[dstIdx] = inPixels[srcIdx];
-	}
-	return outPixels;
-}
-
-static ox::Error toPngFile(
-		ox::CStringViewCR path,
-		ox::Vector<uint32_t> &&pixels,
-		Palette const &pal,
-		size_t const page,
-		unsigned const width,
-		unsigned const height) noexcept {
-	for (auto &c : pixels) {
-		c = color32(color(pal, page, c)) | static_cast<Color32>(0XFF << 24);
-	}
-	constexpr auto fmt = LCT_RGBA;
-	return ox::Error(static_cast<ox::ErrorCode>(
-			lodepng_encode_file(
-					path.c_str(),
-					reinterpret_cast<uint8_t const*>(pixels.data()),
-					width,
-					height,
-					fmt,
-					8)));
-}
-
 TileSheetEditorImGui::TileSheetEditorImGui(studio::Context &sctx, ox::StringParam path):
 		Editor{sctx, std::move(path)},
 		m_sctx{sctx},
@@ -421,21 +370,7 @@ ox::Error TileSheetEditorImGui::exportSubsheetToPng(int const scale) const noexc
 	// subsheet to png
 	auto const &s = m_model.activeSubSheet();
 	auto const &pal = m_model.pal();
-	auto const width = s.columns * TileWidth;
-	auto const height = s.rows * TileHeight;
-	auto pixels = normalizePixelSizes(s.pixels);
-	pixels = normalizePixelArrangement(pixels, s.columns, scale);
-	auto const err = toPngFile(
-			path,
-			std::move(pixels),
-			pal,
-			m_model.palettePage(),
-			static_cast<unsigned>(width * scale),
-			static_cast<unsigned>(height * scale));
-	if (err) {
-		oxErrorf("TileSheet export failed: {}", toStr(err));
-	}
-	return err;
+	return gfx::exportSubsheetToPng(s, pal, m_model.palettePage(), path, scale);
 }
 
 void TileSheetEditorImGui::drawTileSheet(ox::Vec2 const &fbSize) noexcept {