In an earlier article, we saw how to use RenderToStream() method to convert PDF to a GDI image.

Both methods have DPI parameters that allows you to zoom in or out the content if required. PDFtoolkit offers two methods to export content from PDF pages.

This article has been left here for users of older versions of PDFtoolkit. It takes a single method call - TgtPDFDocument.SaveAsImage().Ī special article titled ' PDF-to-Image Export Using PDFtoolkit V4' has been written for users of Version 4. Now, you can obviously save as a ‘PNG’ from the bitmap, but the above code shows how to avoid saving a file to disk unless you really need to.With the release of Version 4 of PDFtoolkit, PDF-to-image conversion is much more simpler. comparison output as PNG from the stream do something with the png stream image '.png') then raise EBitmapSavingFailed.Create( use the codec to save Surface to stream if not TBitmapCodecManager.SaveToStream( procedure TForm1.Button1Click(Sender: TObject) The key part is the TBitmapSurface and TBitmapCodecManager. The following code is an example using two image viewers (and a few save to files to help demonstrate the difference in file size). A simple screen test has gone from over 1mb as a bitmap to around 6kb when saved to PNG using this approach. This is done using the TBitmapCodecManager class. SaveToStream and TBitmapCodecManagerīitmap.SaveToStream doesn’t expose the CodexManager in the same way as it is available automatically with the SaveToFile option so takes a little more work to get a compressed image into the memory stream.

Personally I would use PNG as the JPG formats are around the same size on some test I’ve run, but produce a better quality of image, especially when grabbing screenshots. This works really well with even more extensions supported. SaveToFileĬreating a PNG, JPG/JPEG is as simple as calling the Bitmap.SaveToFile with the correct file extension. Thankfully FireMonkey has a really easy to use CodecManager that allows you to SaveToFile or SaveToStream and convert to PNG or JPG across all platforms (which are vastly smaller in size). If you want to send an image via Stream using LiveBindings or want to save an Image to disk or into a database on a device with limited storage however, they are quite large. In FireMonkey, Bitmap is the common currency for working with images.

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