Blck and white colors are swaped in PDF

2 posts, 0 answers
  1. Alexander
    Alexander avatar
    30 posts
    Member since:
    May 2016

    Posted 25 Jan 2019 Link to this post

    One of  my customers becomes some  times scanned documents, where black and white are exchanged(whinte fonts on black background). Other software displays documents  correct (for example Edge or PDFXchange Viewer). I have figured out that those documents are created with PDF24 programm. Unfortunatly i can not  give you an example because they contains businis secrets and personal information of other peaple.  Could you perhaps help me to fix this behaviour.


    I examen one Document structure with itext rups. It seems that embeded Pictures are realy with swaped colors. Perhaps I have to Config Control right way to display Document correctly. I use default PdfViewer  settings.

  2. Tanya
    Tanya avatar
    894 posts

    Posted 30 Jan 2019 Link to this post

    Hi Alexander,

    There is a known issue in RadPdfViewer related to images which are compressed with CCITTFaxDecode. You can find more information about this case in the related public item: PdfViewer: Images compressed with CCITTFaxDecode with BlackIs1 parameter are rendered with inverted black and white colors.

    It seems like you are hitting the same case but I cannot confirm that without testing a document. Is it possible to create an example document without the sensitive data and share it? Additionally, you can submit a support ticket through our system where the threads are private. I can assure you that we treat all the customer documents in a strictly confidential manner and use them only for testing purposes.

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