Multiple Discrepancies When Saving a Presentation Slide as an Image in Java

Aspose.Slides Product Family
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1

Hello,

I’m trying to save each slide from a PowerPoint presentation as an image, but there are several discrepancies.

Could you please confirm whether this is a bug?

Thank you

Code:

new Presentation("/path/to/charts.pptx").getSlides().forEach(slide ->
        slide.getImage(new Dimension(1820, 1040)).save("/path/to/slide"+slide.getPresentation().getSlides().indexOf(slide)+1+".jpg", ImageFormat.Jpeg));

Attached a PowerPoint document along with images with explanations for each slide
slides.zip (6.9 MB)

2

@dfinsolutions

It appears you are encountering discrepancies when saving slides from a PowerPoint presentation as images. This issue may arise from various factors, including the rendering process or specific slide content.

To troubleshoot, consider the following steps:

  1. Check Slide Content: Verify that the content on the slides (such as images, shapes, or text) is not causing rendering issues. Complex elements may sometimes not render as expected.

  2. Image Dimensions: The dimensions you are using (1820x1040) could affect the quality or rendering of certain elements. Experiment with different dimensions to see if it improves the output.

  3. Update Aspose.Slides: Ensure you are using the latest version of Aspose.Slides, as updates often include bug fixes and enhancements.

  4. Use Different Image Formats: If discrepancies persist, try saving the slides in different image formats (such as PNG) to determine if the issue is format-specific.

Here’s a modified version of your code that includes a check for the slide index:

new Presentation("/path/to/charts.pptx").getSlides().forEach(slide -> {
    int slideIndex = slide.getPresentation().getSlides().indexOf(slide) + 1;
    slide.getImage(new Dimension(1820, 1040)).save("/path/to/slide" + slideIndex + ".jpg", ImageFormat.Jpeg);
});

If the problem continues, consider reaching out to the Aspose support forum with specific details about the discrepancies and the content of the slides for further assistance.

3

@dfinsolutions,
Thank you for contacting free support. I need some time to investigate the issue. I will get back to you as soon as possible.

4

@dfinsolutions,
Thank you for your patience. I’ve reproduced the discrepancies when converting the slides to images. We apologize for any inconvenience caused.

We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): 
  SLIDESJAVA-39724 - Chart axis display units label is missing when converting a slide to an image
  SLIDESJAVA-39725 - Chart data labels are displayed incorrectly when converting slides to images
  SLIDESJAVA-39726 - Chart data points are displayed incorrectly when converting slides to images
  SLIDESJAVA-39727 - Chart is missing when converting a slide to an image
  SLIDESJAVA-39728 - Chart legends are displayed incorrectly when converting slides to images
  SLIDESJAVA-39729 - Chart titles are displayed incorrectly when converting a slide to an image
  SLIDESJAVA-39730 - Text is displayed incorrectly when converting a slide to an image

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

Please also share the following additional information if it is possible:

  • The OS version on which the conversion was performed
  • The JDK target version in your application project