diff --git a/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp b/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp
index 3cc094a114e..f04851eafa5 100644
--- a/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp
+++ b/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp
@@ -2849,6 +2849,8 @@ JS::Value WebGL2RenderingContextImpl::get_parameter(WebIDL::UnsignedLong pname)
         glGetBooleanvRobustANGLE(GL_TRANSFORM_FEEDBACK_PAUSED, 1, nullptr, &result);
         return JS::Value(result == GL_TRUE);
     }
+    case UNPACK_FLIP_Y_WEBGL:
+        return JS::Value(m_unpack_flip_y);
     default:
         dbgln("Unknown WebGL parameter name: {:x}", pname);
         set_error(GL_INVALID_ENUM);
@@ -3145,6 +3147,13 @@ void WebGL2RenderingContextImpl::link_program(GC::Root<WebGLProgram> program)
 void WebGL2RenderingContextImpl::pixel_storei(WebIDL::UnsignedLong pname, WebIDL::Long param)
 {
     m_context->make_current();
+
+    switch (pname) {
+    case UNPACK_FLIP_Y_WEBGL:
+        m_unpack_flip_y = param != GL_FALSE;
+        return;
+    }
+
     glPixelStorei(pname, param);
 }
 
diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
index 1eca3c14e8f..046bd938583 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
@@ -12,6 +12,7 @@ extern "C" {
 #include <GLES2/gl2ext_angle.h>
 }
 
+#include <LibGfx/SkiaUtils.h>
 #include <LibWeb/HTML/HTMLCanvasElement.h>
 #include <LibWeb/HTML/HTMLImageElement.h>
 #include <LibWeb/HTML/HTMLVideoElement.h>
@@ -20,10 +21,12 @@ extern "C" {
 #include <LibWeb/WebGL/OpenGLContext.h>
 #include <LibWeb/WebGL/WebGLRenderingContextBase.h>
 
+#include <core/SkCanvas.h>
 #include <core/SkColorSpace.h>
 #include <core/SkColorType.h>
 #include <core/SkImage.h>
 #include <core/SkPixmap.h>
+#include <core/SkSurface.h>
 
 namespace Web::WebGL {
 
@@ -178,8 +181,20 @@ Optional<WebGLRenderingContextBase::ConvertedTexture> WebGLRenderingContextBase:
     // FIXME: Respect unpackColorSpace
     auto color_space = SkColorSpace::MakeSRGB();
     auto image_info = SkImageInfo::Make(width, height, skia_format, SkAlphaType::kPremul_SkAlphaType, color_space);
-    SkPixmap const pixmap(image_info, buffer.data(), buffer_pitch.value());
-    bitmap->sk_image()->readPixels(pixmap, 0, 0);
+    auto surface = SkSurfaces::WrapPixels(image_info, buffer.data(), buffer_pitch.value());
+    auto surface_canvas = surface->getCanvas();
+    auto dst_rect = Gfx::to_skia_rect(Gfx::Rect { 0, 0, width, height });
+
+    // The first pixel transferred from the source to the WebGL implementation corresponds to the upper left corner of
+    // the source. This behavior is modified by the UNPACK_FLIP_Y_WEBGL pixel storage parameter, except for ImageBitmap
+    // arguments, as described in the abovementioned section.
+    if (m_unpack_flip_y && !source.has<GC::Root<HTML::ImageBitmap>>()) {
+        surface_canvas->translate(0, dst_rect.height());
+        surface_canvas->scale(1, -1);
+    }
+
+    surface_canvas->drawImageRect(bitmap->sk_image(), dst_rect, Gfx::to_skia_sampling_options(Gfx::ScalingMode::NearestNeighbor));
+
     return ConvertedTexture {
         .buffer = move(buffer),
         .width = width,
diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
index 1f1d045d2a6..6ece0ef8b02 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
@@ -14,6 +14,8 @@
 
 namespace Web::WebGL {
 
+static constexpr int UNPACK_FLIP_Y_WEBGL = 0x9240;
+
 // NOTE: This is the Variant created by the IDL wrapper generator, and needs to be updated accordingly.
 using TexImageSource = Variant<GC::Root<HTML::ImageBitmap>, GC::Root<HTML::ImageData>, GC::Root<HTML::HTMLImageElement>, GC::Root<HTML::HTMLCanvasElement>, GC::Root<HTML::OffscreenCanvas>, GC::Root<HTML::HTMLVideoElement>>;
 
@@ -107,7 +109,14 @@ public:
         int width { 0 };
         int height { 0 };
     };
-    static Optional<ConvertedTexture> read_and_pixel_convert_texture_image_source(TexImageSource const& source, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, Optional<int> destination_width = OptionalNone {}, Optional<int> destination_height = OptionalNone {});
+    Optional<ConvertedTexture> read_and_pixel_convert_texture_image_source(TexImageSource const& source, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, Optional<int> destination_width = OptionalNone {}, Optional<int> destination_height = OptionalNone {});
+
+protected:
+    // UNPACK_FLIP_Y_WEBGL of type boolean
+    //      If set, then during any subsequent calls to texImage2D or texSubImage2D, the source data is flipped along
+    //      the vertical axis, so that conceptually the last row is the first one transferred. The initial value is false.
+    //      Any non-zero value is interpreted as true.
+    bool m_unpack_flip_y { false };
 };
 
 }
diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextImpl.cpp b/Libraries/LibWeb/WebGL/WebGLRenderingContextImpl.cpp
index c179c9ab307..3848ab26f87 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextImpl.cpp
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextImpl.cpp
@@ -1501,6 +1501,8 @@ JS::Value WebGLRenderingContextImpl::get_parameter(WebIDL::UnsignedLong pname)
         set_error(GL_INVALID_ENUM);
         return JS::js_null();
     }
+    case UNPACK_FLIP_Y_WEBGL:
+        return JS::Value(m_unpack_flip_y);
     default:
         dbgln("Unknown WebGL parameter name: {:x}", pname);
         set_error(GL_INVALID_ENUM);
@@ -1793,6 +1795,13 @@ void WebGLRenderingContextImpl::link_program(GC::Root<WebGLProgram> program)
 void WebGLRenderingContextImpl::pixel_storei(WebIDL::UnsignedLong pname, WebIDL::Long param)
 {
     m_context->make_current();
+
+    switch (pname) {
+    case UNPACK_FLIP_Y_WEBGL:
+        m_unpack_flip_y = param != GL_FALSE;
+        return;
+    }
+
     glPixelStorei(pname, param);
 }