[wp-trac] [WordPress Trac] #48477: Add a hook before creating image sub-sizes

[WordPress Trac]

#48477: Add a hook before creating image sub-sizes
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 Reporter:  GregLone     |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Upload       |    Version:  trunk
 Severity:  normal       |   Keywords:  has-patch needs-testing 2nd-opinion
  Focuses:               |
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 Since things are moving for media thumbnails lately, it could be a good
 time to add a hook that fires right before thumbnails are created.
 It would allow plugins to perform operations on the main file for example.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48477>
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