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PDF preview works, but PNG preview does not

  • November 19, 2025
  • 1 reply
  • 38 views

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I’m experiencing a strange difference between previewing a PDF file, and a PNG image. 

The source of the files looks similar, but the PDF works, while the PNG gives a 403 error:

A noticeable difference is the function preview_image_name vs download_image_name, could this be the cause of the “forbidden” error? Do I need to enable the download permissions somewhere?

A few months ago PNG worked fine. Since then we only used PDF, but it is strange that now PNG does not seem to work anymore. Am I missing anything?

Data looks like this:
 

 

Best answer by Anne Vries

Hey Jimi,

Did you check the extension whitelist under integration & ai? 

 

1 reply

Forum|alt.badge.img+3
  • Partner
  • Answer
  • November 24, 2025

Hey Jimi,

Did you check the extension whitelist under integration & ai?