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Editorial Team
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Asked: 2026-06-17T19:01:35+00:00

I am trying to save a png file in database using C#. Bitmap thumbnail

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I am trying to save a png file in database using C#.

Bitmap thumbnail = new Bitmap(file.InputStream);
thumbnail = ImageUtilities.ResizeImage(thumbnail, Convert.ToInt32(width),Convert.ToInt32(height)); ImageUtilities.SaveJpeg(path,thumbnail,Convert.ToInt32(Resources.AppConstants.ExtractThumbnailQuality);

The image gets saved in database, but with a black background around the image. In short, it loses its transparency.
If I skip the resizing of image, instead of black background, a white background appears around the image.

Can anyone suggest, how to preserve the tranparency of the image

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1 Answer

  1. Editorial Team

    You are saving the resized image as JPEG. JPEG does not support transparency. Save it as PNG instead

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