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https://issues.apache.org/jira/browse/SOLR-10298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15935366#comment-15935366
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Hoss Man commented on SOLR-10298:
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the optimize-pdf script linked is really just a shorthand for running {{gs}}
with some specific command line args ... we could easily do something similar
(and/or tweak some of the args for our usecase) directly from ant, assuming the
"user" (ie: person building the ref guid) has {{gs}} installed.
At the moment everything we do in the adoc->pdf converstion is java only, so it
would be a bummer to add this external dep, but it would not be the end of the
world.
> Reduce size of new Ref Guide PDF
> --------------------------------
>
> Key: SOLR-10298
> URL: https://issues.apache.org/jira/browse/SOLR-10298
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Components: documentation
> Reporter: Cassandra Targett
>
> The new Ref Guide PDF is ~31Mb in size, which is more than 2x the current PDF
> produced by Confluence (which is 14Mb).
> The asciidoctor-pdf project has a script to optimize the PDF, mostly by
> scaling down images. When I run this tool on the new PDF, the size is reduced
> to ~18Mb. (More info on this script:
> https://github.com/asciidoctor/asciidoctor-pdf#optional-scripts).
> Some of the current image files are very large in size, so I believe that by
> scaling the images down, we can make the size smaller without adding a step
> in the build to run the optimize script programmatically (it also has a
> dependency on GhostScript, so it would be nice to not add another dependency
> if it can be avoided).
> The new PDF is also about 300 pages longer, but this issue is primarily
> concerned with file size. However, reducing the number of pages will also
> make it smaller. A few things that could be tried to reduce the # of pages:
> * Reduce font sizes
> * Increase page margins
> * Review options for when a forced page-break is used and modify if possible
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