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Image Quality when converting Presentation to PDF

When converting the presentation to PDF we are getting a massive reduction in quality of some images. This is the extent that any text in the image becomes illegible.

We have the image quality setting at is maximum.

Has anyone come across this issue and do they know how to fix it?

Hi James,

I have observed your comments. Can you please share source presentation, generated result, also please share which Aspose.Slides version you are using on your end. Please share requested information so that we can further investigate to resolve the issue.

Best Regards,

Hi Adnan,

We’re using <!–[if gte mso 9]>
<m:mathFont m:val=“Cambria Math”/>
<m:brkBin m:val=“before”/>
<m:brkBinSub m:val="–"/>
<m:smallFrac m:val=“off”/>
<m:lMargin m:val=“0”/>
<m:rMargin m:val=“0”/>
<m:defJc m:val=“centerGroup”/>
<m:wrapIndent m:val=“1440”/>
<m:intLim m:val=“subSup”/>
<m:naryLim m:val=“undOvr”/>

Aspose.Slides for .NET Version

We are evaluating Aspose for use for a client so I cannot share examples of their presentations.

Essentially when we add an image, either JPEG or PNG, to a presentation and then convert it. The image in the converted PDF is of much lower resolution/quality compared to the original.

I hope that helps

<!–[if gte mso 10]>

/* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman",serif;}


Hi James,

I have observed your comments. I have shared code snippet. I hope this will solve your problem. If there is still an issue than kindly please share documents with us. I also like to inform that Aspose always give priority to customer privacy.

Presentation p = new Presentation("…Drawings_Test.pptx");

PdfOptions pdfOptions = new PdfOptions { SaveMetafilesAsPng = false };

p.Save(@"…SaveMetafilesAsPng-False.pdf", SaveFormat.Pdf, pdfOptions);

Best Regards,

Hi Adnan,

The code you have supplied us does not make a difference to the image quality.

Can we arrange a screenshare or similar to run through the error with you?

Kind regards


Is there an image dpi setting that we can change in Aspose?

Hi James,

I have observed your comments. Can you please share screen shot to identify the problem.

Best Regards,