diff --git a/Common/GPU/Vulkan/thin3d_vulkan.cpp b/Common/GPU/Vulkan/thin3d_vulkan.cpp
index 04cb77d5c1..ddff19a817 100644
--- a/Common/GPU/Vulkan/thin3d_vulkan.cpp
+++ b/Common/GPU/Vulkan/thin3d_vulkan.cpp
@@ -1891,6 +1891,10 @@ bool VKContext::BlitFramebuffer(Framebuffer *srcfb, int srcX1, int srcY1, int sr
 
 bool VKContext::CopyFramebufferToMemory(Framebuffer *srcfb, Aspect aspects, int x, int y, int w, int h, Draw::DataFormat format, void *pixels, int pixelStride, ReadbackMode mode, const char *tag) {
 	VKFramebuffer *src = (VKFramebuffer *)srcfb;
+	if (!src && vulkan_->GetSwapchain() == VK_NULL_HANDLE) {
+		// No backbuffer to read, as in headless.
+		return false;
+	}
 
 	int aspectMask = 0;
 	if (aspects & Aspect::COLOR_BIT) aspectMask |= VK_IMAGE_ASPECT_COLOR_BIT;
diff --git a/Core/Debugger/WebSocket/GPUBufferSubscriber.cpp b/Core/Debugger/WebSocket/GPUBufferSubscriber.cpp
index 649cd9650e..89e7e14033 100644
--- a/Core/Debugger/WebSocket/GPUBufferSubscriber.cpp
+++ b/Core/Debugger/WebSocket/GPUBufferSubscriber.cpp
@@ -278,7 +278,12 @@ static void GenericStreamBuffer(DebuggerRequest &req, std::function<bool(const G
 void WebSocketGPUBufferScreenshot(DebuggerRequest &req) {
 	GenericStreamBuffer(req, [](const GPUDebugBuffer *&buf, bool *isFramebuffer) {
 		*isFramebuffer = false;
-		return GPUStepping::GPU_GetOutputFramebuffer(buf);
+		if (GPUStepping::GPU_GetOutputFramebuffer(buf)) {
+			return true;
+		}
+		// Without a backbuffer (headless Vulkan), the displayed PSP framebuffer is the closest thing.
+		*isFramebuffer = true;
+		return GPUStepping::GPU_GetCurrentFramebuffer(buf, GPU_DBG_FRAMEBUF_DISPLAY);
 	});
 }