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Exporting PDF as image with annotations

Hi,
using this document (https://help.syncfusion.com/wpf/pdf-viewer/exporting-pdf) I'm able to export PDF page as image, but without annotations. Is it also possible to export it with annotations?

Thanks
Ondra

12 Replies 1 reply marked as answer
DD Divya Dhayalan Syncfusion Team January 27, 2021 02:56 PM UTC

Hi Ondrej, 
 
Thanks for contacting Syncfusion support. 
 
Yes, we can export image with annotation. We have created a sample to export images with annotation, which we added using PdfViewerControl. Please download the sample form the below link. 
 
We have created a video for your reference, please download the video from the below link: 
 
Please let us know if the provided details helps to achive your requirement or if you need any further assistance on this. 
 
Regards, 
Divya

Marked as answer
OS Ondrej Svoboda January 28, 2021 10:18 AM UTC

Hi, thanks this works.
I've found out that the problem was that I was using different ExportAsImage function: pdfviewercontrol.LoadedDocument.ExportAsImage(); and this one doesn't save the annotations.

OS Ondrej Svoboda January 28, 2021 12:15 PM UTC

Hi,
I've found strange behavior of your sample, probably a bug.
I'm exporting only the first page, with this code change:

//BitmapSource[] image = pdfviewercontrol.ExportAsImage(0, pdfviewercontrol.LoadedDocument.Pages.Count - 1);
BitmapSource[] image = new[] { pdfviewercontrol.ExportAsImage(0) }; 

Follow these steps:

  1. Run the sample
  2. Add textbox annotation
  3. Click ExportToImage button 
In the resulting image you'll see the text box twice. See attached file - image and also edited pdf. If you open this pdf and just export to image, you'll see again two text boxes. In the preview it is OK - only once.

Strange part is when you change the export method to this:
BitmapSource[] image = pdfviewercontrol.ExportAsImage(0, 0);

all works fine again. So I think the problem is only in ExportAsImage method with one parameter.

Have a look on it please.



Attachment: files_9899146c.zip

DD Divya Dhayalan Syncfusion Team January 29, 2021 02:48 PM UTC

Hi Ondrej, 
 
Please find the details below. 
 
I've found strange behavior of your sample, probably a bug. 
I'm exporting only the first page, with this code change: 
//BitmapSource[] image = pdfviewercontrol.ExportAsImage(0, pdfviewercontrol.LoadedDocument.Pages.Count - 1);
BitmapSource[] image = new[] { pdfviewercontrol.ExportAsImage(0) };  
Follow these steps: 
Run the sample 
Add textbox annotation 
Click ExportToImage button  
In the resulting image you'll see the text box twice. See attached file - image and also edited pdf. If you open this pdf and just export to image, you'll see again two text boxes. In the preview it is OK - only once. 
 
Strange part is when you change the export method to this: 
BitmapSource[] image = pdfviewercontrol.ExportAsImage(0, 0); 
 
all works fine again. So I think the problem is only in ExportAsImage method with one parameter. 
 
On analyzed further, we found the reported issue “ExportAsImage with single parameter resultant image have improper count of text annotation” is a defect and we have logged a defect report for this. The patch for this fix is expected to be available on February 12th, 2021.   
   
Please find the feedback link below   
 
 
 
Regards, 
Divya 


OS Ondrej Svoboda February 1, 2021 09:13 AM UTC

Hi,
thanks, but I can't open the feedback link. I'm getting this error:

Access Denied

This private feedback is not associated with your account.


DD Divya Dhayalan Syncfusion Team February 2, 2021 10:23 AM UTC

Hi Ondrej, 
 
Sorry for the inconvenience caused. 
 
We have now changed the visibility of the feedback to public. Please try again and let us know if works. 
 
Regards, 
Divya 


DD Divya Dhayalan Syncfusion Team February 13, 2021 09:23 AM UTC

 
The issue “ExportAsImage with single parameter resultant image have improper count of text annotation” has been fixed and patch for this fix can be downloaded from the following location. 
  
Recommended approach - exe will perform automatic configuration   
   
Advanced approach – use only if you have specific needs and can directly replace existing assemblies for your build environment   
Please find the patch assemblies alone from below location:  
   
 
Assembly Version: 18.4.0.30 
   
Installation Directions:   
This patch should replace the files “Syncfusion.Pdf.Base.dll, Syncfusion.PdfViewer.WPF.dll” under the following folder.   
$system drive:\ Files\Syncfusion\Essential Studio\$Version # \precompiledassemblies\$Version#\4.6   
Eg : $system drive:\Program Files\Syncfusion\Essential Studio\9.3.0.61\precompiledassemblies\9.3.0.61\4.0   
   
To automatically run the Assembly Manager, please check the Run assembly manager checkbox option while installing the patch. If this option is unchecked, the patch will replace the assemblies in precompiled assemblies’ folder only. Then, you will have to manually copy and paste them to the preferred location or you will have to run the Syncfusion Assembly Manager application (available from the Syncfusion Dashboard, installed as a shortcut in the Application menu) to re-install assemblies.   
   
Note:   
You can change how you receive bug fixes by navigating to the following link and updating your preferences.   
   
   
This fix will be included in our 2021 Volume 1 release which will be available on March month – 2021 
   
Please find the feedback link below, 
 
Regards, 
Divya 


OS Ondrej Svoboda February 25, 2021 03:30 PM UTC

Hi,
was this already released in nuget weekly release 18.4.0.44?

DD Divya Dhayalan Syncfusion Team February 26, 2021 09:35 AM UTC

Hi Ondrej, 

No, this fix was not included in the weekly NuGet release version 18.4.0.44, We will include the fix in our next weekly NuGet release which is expected to be available on 2nd March 2021. 

Regards, 
Divya 


VS Vikas Sekar Syncfusion Team March 2, 2021 01:02 PM UTC

Hi Ondrej, 
  
As we mentioned in the previous update, we have included the fix for this issue “ExportAsImage with single parameter resultant image have improper count of text annotation” in our latest weekly NuGet release, so kindly upgrade to latest version v18.4.0.46 to get the issue resolved.   
    
  
Regards, 
Vikas 


OS Ondrej Svoboda March 5, 2021 01:48 PM UTC

Thanks, I can confirm that it is fixed now.

DD Divya Dhayalan Syncfusion Team March 8, 2021 05:28 AM UTC

 
Most Welcome. 
 
Please let us know if you need any further assistance on this. 
 
Regards, 
Divya 


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