Blank page when converting pdf to image

Aspose.PDF Product Family
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1

We are using aspose-pdf 24.2 java and getting a blank image when converting pdf to jpeg image which are generated via chatgpt , clause like LLM. Its not recreate for normal pdfs. Any one face this issue or could point to what could lead to this issue?
We use below code to upload the converted file to aws s3 and then fetch it through a cdn. Same issue happen for PngDevice

Resolution resolution = new Resolution(100);
JpegDevice jpegDevice = new JpegDevice(resolution, 100);
Document pdfDocument = new Document(bytecontent);

for (Page pageCollection : pdfDocument.getPages()) {
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    jpegDevice.process(pageCollection, output);
    documentStore.uploadStream(output.toByteArray(),"imagename", "image/jpeg");
}
2

@harshana

Cause

The issue of getting a blank page when converting PDFs generated by ChatGPT could be due to various reasons, such as unsupported content types, corrupted PDF structures, or specific rendering settings that don’t handle certain elements well.

Solution

To troubleshoot and potentially resolve this issue, consider the following steps:

  1. Check PDF Content: Ensure that the PDF generated by ChatGPT does not contain any unsupported elements or corrupted data. Open the PDF in a standard viewer to verify if it displays correctly.

  2. Adjust Resolution: Sometimes, the resolution settings can affect the output. Increase the resolution when creating the JpegDevice.

  3. Use Different Device: If the JpegDevice is causing issues, switch to a different image device like PngDevice or TiffDevice to see if the problem persists.

  4. Error Handling: Implement error handling in your code to catch any exceptions that might provide more insight into what’s going wrong during the conversion process.

Code

Here’s a modified version of your code that includes a higher resolution and uses PngDevice:

Resolution resolution = new Resolution(300); // Increased resolution
PngDevice pngDevice = new PngDevice(resolution); // Using PngDevice
Document pdfDocument = new Document(bytecontent);

for (Page page : pdfDocument.getPages()) {
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    pngDevice.process(page, output);
    documentStore.uploadStream(output.toByteArray(), "imagename", "image/png");
}

Next Steps

  1. Test the modified code to see if it resolves the blank page issue.
  2. If the problem persists, validate the PDF file using Aspose’s validation methods to check for any structural issues.
  3. If you continue to experience difficulties, please share the specific PDF file or its characteristics for further assistance.

Please let me know if you need any further help!

1 Like
3

Increasing the resolution seems working. I used 200 and it worked

4

@harshana

It is nice to know that your issue has been resolved. Please keep using our API and feel free to create a new topic in case you need any kind of assistance.

5

I am facing a new issue where initially i test in local it worked but when i deploy this to a aws ecs container again issue is reproducing. ecs running on amazoncorretto:17-alpine3.18

6

@harshana

Have you tried with the latest version of the API? Please share sample file(s) and the code snippet with some details about the issue. We will test the scenario in our environment and address it accordingly.