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https://issues.apache.org/jira/browse/TIKA-3683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17496285#comment-17496285
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Tilman Hausherr commented on TIKA-3683:
---------------------------------------

I don't know about the first and the last, but the other three are font 
packages so PDFs will look better when rendering when fonts are not embedded in 
a PDF.

> Documentation of native dependencies per module
> -----------------------------------------------
>
>                 Key: TIKA-3683
>                 URL: https://issues.apache.org/jira/browse/TIKA-3683
>             Project: Tika
>          Issue Type: Wish
>          Components: tika-docker, tika-server
>            Reporter: dataminer.accolade
>            Priority: Minor
>
> I created a custom Docker image using the latest Tesseract release. I came 
> across the tika 
> [Dockerfile|https://github.com/apache/tika-docker/blob/master/full/Dockerfile]
>  file which installs the following dependencies:
> xfonts-utils
> fonts-freefont-ttf
> fonts-liberation
> ttf-mscorefonts-installer
> cabextract
> I have not found any documetation yet about those dependencies in 
> [https://cwiki.apache.org/confluence/display/tika] and 
> [https://github.com/apache/tika]. I can only guess that those dependencies 
> might impact PDF content handling.



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