> On 9 Mar 2016, at 06:11, Felix Hermann <[email protected]> wrote:
> 
> Hello,
>  
> we use PDFBox 2.0.0 for converting PDF to images.
>  
> We also want to support JBIG2 images. Therefore we would like to use the 
> JBIG2-Image-Decoder, which is proposed on your website. (See: 
> https://pdfbox.apache.org/2.0/dependencies.html )
>  
> On your website it says: "These libraries are optional and will be loaded if 
> present on the classpath, otherwise support for these image formats will be 
> disable and a warning will be logged when an unsupported image is 
> encountered."
>  
> I downloaded the source code, created a jar-file and put it onto the 
> classpath.
>  
> However it didn't work. I'm getting the following error:
>  
> [09.03.2016 14:37:59] ERROR org.apache.pdfbox.contentstream.PDFStreamEngine 
> (PDFStreamEngine.java:851) - Cannot read JBIG2 image: jbig2-imageio is not 
> installed
>  
> I also tried 'JBIG2 ImageIO' by 'levigo'. This worked. However we cannot use 
> it, as it is under the GPL-Licence.

That’s interesting, could you add some code to your application to dump the 
value of:

ImageIO.getReaderFormatNames()

Make sure you do this in the problem code, with the appropriate classpath. Let 
me know the result.

— John

>  
> Any help will be appreciated
>  
> Regards
>  
> Felix
> 
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