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https://issues.apache.org/jira/browse/NIFI-3737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15983071#comment-15983071
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ASF GitHub Bot commented on NIFI-3737:
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Github user brosander commented on the issue:
https://github.com/apache/nifi/pull/1693
@andrewmlim those images work fine for me on OSx Sierra (10.12.4) and on
Ubuntu Linux. I asked @mattyb149 to try them and he said they worked for him
on Sierra and not El Capitan.
I think we may have found an already resolved bug in the OSx png rendering
functionality. Still backed images out so that we don't cause confusion or
problems for El Capitan users.
> Optimize png resources with optipng
> -----------------------------------
>
> Key: NIFI-3737
> URL: https://issues.apache.org/jira/browse/NIFI-3737
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Bryan Rosander
> Assignee: Bryan Rosander
> Priority: Trivial
>
> [Optipng|http://optipng.sourceforge.net/] is a utility that tweaks
> compression parameters in png files to reduce their size without losing
> quality. Running this on all the png resources in NiFi reduces their total
> size by about 35% (12M -> 7.4M).
> This isn't a huge change but it should be very low impact and will hopefully
> make the ui feel a bit snappier with smaller resources.
> [Command to optimize all
> pngs|http://stackoverflow.com/questions/21801085/optimize-images-in-directory-using-multiple-cpu-cores#answer-21998589]:
> {code}
> find ./ -iname '*.png' -print0 | xargs -0 -n 1 -P 4 optipng -o7
> {code}
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