How to compare two images by pixel using selenium C#

Question

I have two screenshots. One is expected , another one is actual . I was looking for a good way to compare those screenshots using C# for my automated selenium tests. I found a few decisions to do that in java but C# doesn't provide a lot. I'd appreciate any help

Answer 1

You can use ImageMagick a 3rd party application. It supports command line calls to do image comparison. The following link discusses how to use the command line call: http://techblog.hotwire.com/2016/05/19/image-comparison-in-automated-testing/

You can also use the nuget package for ImageMagick. This would allow you to embed C# calls to the nuget library in your .NET application. The following stack overflow answer discusses it: https://stackoverflow.com/a/14235661/2683997

Both of these links assumes that you have been able to do the image capture part already.

Answer 2

You can do this by sikuli with selenium web driver