Shapes incorrectly positioned when converting slide to PNG

Aspose.Slides Product Family
1

I am using aspose-slides:jdk16:17.8 to convert .ppt and .pptx slides to PNG images for my web application.

In most cases the conversion works well. However, I have several slides that contain shapes, lines and text that, when converted to PNG image, appear in different positions than the original slides.

Example 1:
Contiq_example_1.pptx - original document containing one slide with all shapes in their correct locations
Contiq_example_1.pptx.zip (506.8 KB)
Contiq_example_1.png - converted PNG image with shapes not in the correct location with respect to original
Contiq_example_1.png (20.3 KB)

Example 2:
Contiq_example_2.pptx - original document containing one slide with all shapes in their correct locations
Contiq_example_2.pptx.zip (765.6 KB)
Contiq_example_2.png - converted PNG image with shapes not in the correct location with respect to original
Contiq_example_2.png (66.7 KB)

2

@rahul.contiq,

I have observed the information shared by you and have verified the presentation decks on my end using Aspose.Slides for Java 18.3. I have not been able to observe the issue on my end. I suggest you to please try using the suggested version on your end.

Contiq_example_1_0.jpg (27.3 KB)
Contiq_example_2.jpg (83.4 KB)

3

I have rebuilt our application using the aspose-slides v18.3 from the location https://repository.aspose.com/repo/com/aspose/aspose-slides/

Unfortunately when I extract the slide for contiq_example_1.pptx and convert it to png I don’t get the desired result. Consider the attached file which is a PNG output from v18.3.

I also not that your examples are JPG output. Could this be the reason for the difference?

Otherwise I am not sure what else to do to fix the issue.Contiq_example_1_v18-3.png (36.9 KB)

4

@rahul.contiq,

Can you please share the sample code that you have used on your end for thumbnail creation along with Operating System and Java details used.

5

Running on Amazon linux instances.

			this.logInfo(String.format("Creating PNG for slide %d of document %d", index, documentId));

			buffer = com.contiq.common.aspose.Utils.toPNG(slide, 2F);

			this.logInfo(String.format("Completed creation of PNG for slide %d of document %d", index, documentId));

			if (pngStore == null)
				pngStore = this.factory.createFileStore(ContentType.png);

			this.logInfo(String.format("Uploading PNG for slide %d of document %d", index, documentId));

			pngStore.save(buffer, itemKey);

			this.logInfo(String.format("Completed uploading PNG for slide %d of document %d", index, documentId));
6

@rahul.contiq,

As requested earlier, can you please share the Java details used on your end as well. Secondly, I have observed from your code that you have used Aspose.Slides in your own custom way and I am unsure whether the custom mechanism has any implications or not. Therefore, I suggest you to please try using this sample code in a separate Java console application and verify the results. If there is still an issue then please share the Java JDK details used on your end along with a working sample project reproducing issue. Unfortunately, from above shared portion of code, I am unable to use that on my end.

7

Java JDK 1.8 (Java 8)

8

@rahul.contiq,

As per our suggestion, did you try using sample console Java application on your end. Also, I have requested for following information. Can you please share that.