diff --git a/tasmota/xdrv_52_3_berry_lvgl.ino b/tasmota/xdrv_52_3_berry_lvgl.ino
index af435851b..9a2973df1 100644
--- a/tasmota/xdrv_52_3_berry_lvgl.ino
+++ b/tasmota/xdrv_52_3_berry_lvgl.ino
@@ -956,11 +956,53 @@ extern "C" {
     if (!glue) { be_return_nil(vm); }
 
     char fname[32];
-    snprintf(fname, sizeof(fname), "/screenshot-%d.raw", Rtc.utc_time);
+    snprintf(fname, sizeof(fname), "/screenshot-%d.bmp", Rtc.utc_time);
     File f = dfsp->open(fname, "w");
     if (f) {
       glue->setScreenshotFile(&f);
 
+      uint32_t bmp_width = lv_disp_get_hor_res(nullptr);
+      uint32_t bmp_height = lv_disp_get_ver_res(nullptr);
+
+      // write BMP header
+      static const uint8_t bmp_sign[] = { 0x42, 0x4d };   // BM = Windows
+      f.write(bmp_sign, sizeof(bmp_sign));
+      size_t bmp_size = bmp_width * bmp_height * LV_COLOR_DEPTH / 8 + 0x44;
+      f.write((uint8_t*)&bmp_size, sizeof(bmp_size));
+      uint32_t zero = 0;
+      f.write((uint8_t*) &zero, sizeof(zero));  // reserved 4-bytes
+      uint32_t bmp_offset_to_pixels = 0x44;  // TODO
+      f.write((uint8_t*) &bmp_offset_to_pixels, sizeof(bmp_offset_to_pixels));
+
+      // DIB Header BITMAPINFOHEADER
+      size_t bmp_dib_header_size = 52;                    // BITMAPV2INFOHEADER
+      f.write((uint8_t*) &bmp_dib_header_size, sizeof(bmp_dib_header_size));
+
+      f.write((uint8_t*) &bmp_width, sizeof(bmp_width));
+      f.write((uint8_t*) &bmp_height, sizeof(bmp_height));
+
+      // rest of header
+      // BITMAPV2INFOHEADER = 52 bytes header, 40 bytes sub-header
+      static const uint8_t bmp_dib_header[] = {
+        0x01, 0x00,                       // planes
+          16, 0x00,                       // bits per pixel = 16
+        0x03, 0x00, 0x00, 0x00,           // compression = BI_BITFIELDS uncrompressed
+        0x00, 0x00, 0x00, 0x00,           // Image size, 0 is valid for BI_RGB (uncompressed) TODO
+        0x00, 0x00, 0x00, 0x00,           // X pixels per meter
+        0x00, 0x00, 0x00, 0x00,           // Y pixels per meter
+        0x00, 0x00, 0x00, 0x00,           // Colors in table
+        0x00, 0x00, 0x00, 0x00,           // Important color count
+
+        // RGB masks
+        0x00, 0xF8, 0x00, 0x00,           // Red channel mask
+        0xE0, 0x07, 0x00, 0x00,           // Green channel mask
+        0x1F, 0x00, 0x00, 0x00,           // Blue channel mask
+
+        0x00, 0x00,                       // Padding to align on 4 bytes boundary
+      };
+      f.write(bmp_dib_header, sizeof(bmp_dib_header));
+      // now we can write the pixels array
+
       // redraw screen
       lv_obj_invalidate(lv_scr_act());
       lv_refr_now(lv_disp_get_default());