Spreadsheets optimization added

net/developer-guide/rendering-documents/rendering-to-pdf/optimization-pdf-options/optimization-pdf-spreadsheets.md

@@ -0,0 +1,42 @@
+---
+id: optimization-pdf-for-web
+url: viewer/net/optimization-pdf-for-web
+title: Optimize spreadsheets in a PDF file
+linkTitle: Optimize spreadsheets in a PDF file
+weight: 1
+description: "This topic describes how to optimize spreadsheets in a PDF file using the GroupDocs.Viewer .NET API (C#)."
+keywords: convert to pdf, optimize browser, optimize web
+productName: GroupDocs.Viewer for .NET
+hideChildren: False
+toc: True
+---
+This optimization allows to reduce the output file size by setting up border lines. Besides that, it removes the Arial and Times New Roman characters of 32-127 codes.
+
+The default value is `false`.
+
+
+The following code snippet shows how to optimize spreadsheets in a PDF file:
+
+{{< tabs "Example1">}}
+{{< tab "C#" >}}
+```csharp
+using GroupDocs.Viewer;
+using GroupDocs.Viewer.Options;
+using GroupDocs.Viewer.Domain.Documents.PostProcessing.Pdf.Optimization;
+// ...
+
+using (var viewer = new Viewer("invoice.xlsx"))
+    {
+        PdfViewOptions viewOptions = new PdfViewOptions();
+        viewOptions.PdfOptimizationOptions = new PdfOptimizationOptions 
+        {
+            OptimizeSpreadsheets = true
+        };
+
+        viewer.View(viewOptions);
+    }
+```
+{{</ tab >}}
+{{</ tabs >}}
+
+