Blank document pages along with UnknownErrorException

Technical Support
1

Which product are you using?
PDF.js Express Viewer

PDF.js Express Version
8.7.4

Detailed description of issue
When I load certain documents to the viewer, I observe that all pages are blank. The page quantity is right. I also can see full document inside the browser tab or via desctop application. As I noticed the issue is happening during the PaintOnCanvas process.

Here how the document looks like in the viewer:

image
image1228×779 27.5 KB

If image won’t load - here’s the screenshot link - Screenshot by Lightshot

The error message:

image
image1392×394 40.3 KB

If image won’t load - here’s the screenshot link - Screenshot by Lightshot

Expected behaviour
Be able to see a document’s content or at least be able to use a callback to show notification in such scenario.

Does your issue happen with every document, or just one?
Not one and not every. Certain documents.

Link to document

2

Hello azhuravlev,

Thank you for reaching out, it looks like there may be a corruption in the file that are arent handling correctly.

We have an onError callback in our LoadDocumentOptions that would trigger when a file has failed to load: PDFJS Express WebViewer Namespace: Core

Best regards,
Tyler

3

Hello tgordon,

Thanks for the answer. Just wanted to clarify next things:

#1 If the document is corrupted why we’re able to see the content inside browser and desktop viewers?
Browser:

image
image1375×467 57.3 KB

Acrobat Reader:

image
image1428×436 44.7 KB

#2 Unfortunately, this issue isn’t happening during the document loading process, so event isn’t triggering. What event we can use in this case?