Problem with Picture Transperancy in PDF File

[simplements]

Hi,
we have a problem with the transperancy of pictures inside our Converted PDF-Files.
In our Docx the Picture is Transparent. After the conversion to PDF the Picture isn't transparent.

Here is the code we use to convert the Spire.Doc.Document to a PDF-File.

Code: Select all

       
private static MemoryStream ConvertDocumentToPDFStream(Document document)
        {
            var tempStrem = new MemoryStream();
            document.SaveToStream(tempStrem, FileFormat.Docx);
            var tempDoc = new Document(tempStrem);

            ToPdfParameterList toPdf = new ToPdfParameterList();
            toPdf.PdfConformanceLevel = PdfConformanceLevel.Pdf_A3B;
            MemoryStream resultStream = new MemoryStream();
            tempDoc.SaveToStream(resultStream, toPdf);
            return resultStream;
        }


Also in the Attachment i provided two documents created via a Test.

OutputFiles.zip

Kind regards,
Till

[amy.zhao]

Hello,

Thanks for your inquiry.

To assist us in investigating this issue and providing you with a solution, please provide your Word document and inform us of the version number of the Spire.Doc.dll that you are currently using. Thank you!

Sincerely,
Amy
E-iceblue support team

[simplements]

Hi Amy,

we have installed Spire.Doc version 12.7.3.
Here is the Template-File and the Transparent Image i used for the example-outputs.

TemplateFiles.zip

Here are again the output Files, since it seems there not correctly uploaded in my initial post.

OutputFiles.zip

Regards,
Till

[amy.zhao]

Hello,

Thank you for your assistance.

I have been able to reproduce the issue with lost picture transparency using your provided document, and I have logged it into our issue tracking system with the tracking number SPIREDOC-11005.

However, during my testing, I found that the problem does not occur if the document is directly converted to PDF format instead of PDFA3B. When I used our specialized Spire.PDF product, which has robust features for handling PDF documents, to convert the PDF document to PDFA3B, the resulting document displayed correctly without losing picture transparency. Below is the complete code I used:

Code: Select all

// Create a new Document object and load the Word document from file
Document document = new Document();
document.LoadFromFile("TransparentOutput.docx");

// Save the Word document to a PDF stream
MemoryStream resultPDFStream = new MemoryStream();
document.SaveToStream(resultPDFStream, Spire.Doc.FileFormat.PDF);

// Initialize a PdfStandardsConverter with the PDF stream
PdfStandardsConverter converter = new PdfStandardsConverter(resultPDFStream);

// Convert the PDF stream to PDFA3B and save it to another memory stream
MemoryStream resultPDFA3BStream = new MemoryStream();
converter.ToPdfA3B(resultPDFA3BStream);


If you are interested in trying to convert PDF to PDFA using Spire.PDF, you can quickly install and use it via NuGet by searching for "Spire.PDF". The latest version available is 10.11.7, which you can find at the following link:
NuGet link: https://www.nuget.org/packages/Spire.PDF/10.11.7
Our website link: https://www.e-iceblue.com/Download/download-pdf-for-net-now.html

Sincerely,
Amy
E-iceblue support team

[simplements]

Hello,

what's the current status of the ticket SPIREDOC-11005?

Kind regards,
Till

[Lisa.Li]

Hello,

Thank you for following up.
I am sorry to tell that there is no significant progress so far. I have urged our Dev team, they are still doing investigation about it. Any update, we will let you know immediately. Sorry for the inconvenience caused.

Sincerely,
Lisa
E-iceblue support team

[simplements]

Hello,

what's the current status of the ticket SPIREDOC-11005?
Our customers are waiting for a solution.

Kind regards,
Till

[Nina.Tang]

Hi Till,

Due to the complexity of your issue, our dev team has not yet found a complete solution. I have urged them again and they will accelerate the investigation of this problem. If I receive any news, I will notify you promptly. Thank you for your understanding.

Sincerely,
Nina
E-iceblue support team

[amy.zhao]

Hello,

Thank you for your patience.

A new version of Spire.Doc Pack (hotfix) Version 13.12.2 for addressing the issue SPIREDOC-11005 has been released.
Download link: https://www.e-iceblue.com/Download/download-word-for-net-now.html
Nuget links:
https://www.nuget.org/packages/Spire.Doc/13.12.2
https://www.nuget.org/packages/Spire.Docfor.NETStandard/13.12.2

Please feel free to contact us if you have any questions.

Sincerely,
Amy
E-iceblue support team