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diff --git a/examples/example_encode_type.cpp b/examples/example_encode_type.cpp
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+/*
+LodePNG Examples
+
+Copyright (c) 2005-2015 Lode Vandevenne
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this software
+    in a product, an acknowledgment in the product documentation would be
+    appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source
+    distribution.
+*/
+
+//g++ -I ./ lodepng.cpp examples/example_encode_type.cpp -ansi -pedantic -Wall -Wextra -O3
+
+
+
+/*
+This example shows how to enforce a certain color type of the PNG image when
+encoding a PNG (because by default, LodePNG automatically chooses an optimal
+color type, no matter what your raw data's colro type is)
+*/
+
+#include <cmath>
+#include <iostream>
+
+#include "lodepng.h"
+
+int main(int argc, char *argv[])
+{
+  //check if user gave a filename
+  if(argc < 2)
+  {
+    std::cout << "please provide a filename to save to" << std::endl;
+    return 0;
+  }
+
+  //generate some image
+  const unsigned w = 256;
+  const unsigned h = 256;
+  std::vector<unsigned char> image(w * h * 4);
+  for(unsigned y = 0; y < h; y++)
+  for(unsigned x = 0; x < w; x++)
+  {
+    int index = y * w * 4 + x * 4;
+    image[index + 0] = 0;
+    image[index + 1] = 0;
+    image[index + 2] = 0;
+    image[index + 3] = 255;
+  }
+
+  // we're going to encode with a state rather than a convenient function, because enforcing a color type requires setting options
+  lodepng::State state;
+  // input color type
+  state.info_raw.colortype = LCT_RGBA;
+  state.info_raw.bitdepth = 8;
+  // output color type
+  state.info_png.color.colortype = LCT_RGBA;
+  state.info_png.color.bitdepth = 8;
+  state.encoder.auto_convert = 0; // without this, it would ignore the output color type specified above and choose an optimal one instead
+
+  //encode and save
+  std::vector<unsigned char> buffer;
+  unsigned error = lodepng::encode(buffer, &image[0], w, h, state);
+  if(error) std::cout << "encoder error " << error << ": "<< lodepng_error_text(error) << std::endl;
+  else lodepng::save_file(buffer, argv[1]);
+}