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Editorial Team
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Asked: 2026-06-17T17:09:14+00:00

I want to load local html file which in the local folder to the

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I want to load local html file which in the local folder to the webview, but WebView doesn’t support ‘ms-aspx:///’ protocal, I found a solution to read the html file to stream, and then convert it to string, using NavigateToString method to load the html, it works well. But, If there’s an image in the html file, the image couldn’t display, anyone can help?

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1 Answer

  1. Editorial Team

    I have solved.

    Solution:

    Convert the image file to base64 string

    StorageFolder appFolder = ApplicationData.Current.LocalFolder;
        StorageFile file = await appFolder.GetFileAsync("SplashScreen.png");
        using (var stream = await file.OpenAsync(FileAccessMode.Read))
        {
            var reader = new DataReader(stream.GetInputStreamAt(0));
            var bytes = new byte[stream.Size];
            await reader.LoadAsync((uint)stream.Size);
            reader.ReadBytes(bytes);
            base64 = Convert.ToBase64String(bytes);
        }

    Use StringBuilder to create the html string

    sb.Append("<html><head><title>Image test</title></head><body><p>This is a test app!</p><img src=\"data:image/png;base64,");
        sb.Append(base64);
        sb.Append("\" /></body></html>");
        TestWebView.NavigateToString(sb.ToString());
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