Try building

windows.py

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+
+import imgkit
+from PIL import Image
+
+config = imgkit.config(wkhtmltoimage='C:\\Program Files\\wkhtmltopdf\\bin\\wkhtmltoimage.exe')
+
+print("Generating html...")
+
+
+print("Converting to image...")
+imgkit.from_file('./test.html', 'in.png', 
+                 config=config,
+                 options={
+    'format': 'png',
+    'crop-h': '300',
+    'crop-w': '400'
+})
+
+img = Image.open('./in.png')
+
+# Resize image
+w, h = img.size
+
+h_new = 300
+w_new = int((float(w) / h) * h_new)
+w_cropped = 400
+img = img.resize((w_new, h_new), resample=Image.LANCZOS)
+x0 = (w_new - w_cropped) / 2
+x1 = x0 + w_cropped
+y0 = 0
+y1 = h_new
+img = img.crop((x0, y0, x1, y1))
+
+pal_img = Image.new('P', (1,1))
+pal_img.putpalette((255,255,255,0,0,0,0,0,0) + (0,0,0) * 252)
+
+img = img.convert("RGB").quantize(palette=pal_img)
+img.save('out.bmp')
+print("Done!")