[wp-trac] [WordPress Trac] #45982: PDF thumbnails have a default black background

[WordPress Trac]

#45982: PDF thumbnails have a default black background
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 Reporter:  nebrekab      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Media         |     Version:  5.0.3
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by richardshea):

 Replying to [comment:17 thatstevensguy]:
 > If you just want to dump @jlambe's great solution at the end of your
 themes functions.php, you will get errors about the namespace not being at
 the start of the file. In this case, the below less elegant version is
 working for me.

 THANK YOU so much for that solution of yours for simply using the theme
 functions.php, thanks to @jlambe and everyone else too. I'd tried some of
 those but had errors beyond my capability.

 But this solution is ideal and I've got it to work with this plugin:
 https://github.com/pedroelsner/force-regenerate-thumbnails  (and only that
 version, from that source) which would re-generate thumbs for PDF's
 automatically for existing uploads (it's not perfect, creates a new
 "xxx-1.jpg" subset of images but works in WP media as new ones). All other
 Regenerate Thumbnail plugins skip PDFs.

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Ticket URL: <https://core.trac.wordpress.org/ticket/45982#comment:18>
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