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wpfimagescalejpegimage-scaling

Scale a .jpg file in WPF

I'd like to open a .jpg file in WPF, scale it down to around 50%, then save it back to the file system. What's a good/efficient way to go about doing that?

Solution

  • If you want to save on the memory usage you should look into specifying DecodePixelWidth/DecodePixelHeight on BitmapImage or the JpegDecoder.

    The scaling can be accomplished using TransformedBitmap.