[wp-trac] [WordPress Trac] #65188: Uploading PNG images with a larger number of colors causes timeouts and eventually CPU starvation

WordPress Trac noreply at wordpress.org
Thu May 7 10:24:18 UTC 2026


#65188: Uploading PNG images with a larger number of colors causes timeouts and
eventually CPU starvation
---------------------------+------------------------------
 Reporter:  romainmrhenry  |       Owner:  (none)
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  Awaiting Review
Component:  Upload         |     Version:  6.8
 Severity:  normal         |  Resolution:
 Keywords:                 |     Focuses:  performance
---------------------------+------------------------------

Comment (by siliconforks):

 Replying to [ticket:65188 romainmrhenry]:
 > Uploading a png image with a large number of colors, for example a
 photographic image in .png format, causes the `getImageColors()` step at
 line 506 to be extremely slow.

 You're using version 6.8?  This is a known issue in 6.8.  See
 https://core.trac.wordpress.org/ticket/63481#comment:5

 Can you update to version 6.9?

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Ticket URL: <https://core.trac.wordpress.org/ticket/65188#comment:5>
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