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https://issues.apache.org/jira/browse/PDFBOX-1176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13607720#comment-13607720
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Maruan Sahyoun commented on PDFBOX-1176:
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Well, I omitted the checks for simplicity. This is not production strength but
should illustrate a potential approach!
if (graphicsStateDictionary == null){
graphicsStateDictionary = new TreeMap();
}
There are more checks needed e.g.. page.findResources() could be null ....
And, if it's the same watermark on every page, doing an overlay/underlay would
be better as the 'object' is then defined only once and reused. Look at the
OverlayPDF command line tool to see how this can be done.
> Watermark
> ---------
>
> Key: PDFBOX-1176
> URL: https://issues.apache.org/jira/browse/PDFBOX-1176
> Project: PDFBox
> Issue Type: Wish
> Reporter: Rubesh MX
> Labels: Watermark
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> I am checking if watermarks can be added to a PDF doc and the same way can
> be removed, so far I could not find any option to do that with PDFBox; It
> will be better if we have an option to add and remove watermak to a PDF.
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