[wp-trac] [WordPress Trac] #35725: Add WebP support.

[WordPress Trac]

#35725: Add WebP support.
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 Reporter:  markoheijnen                         |       Owner:
                                                 |  adamsilverstein
     Type:  enhancement                          |      Status:  assigned
 Priority:  normal                               |   Milestone:  5.8
Component:  Media                                |     Version:  3.5
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch needs-testing has-unit-    |     Focuses:
  tests needs-dev-note dev-feedback              |
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Comment (by adamsilverstein):

 Actually, as far as I can tell, LibGD does not currently support lossless
 WebP images, unless I am missing something the library makes a single call
 to save images using the lossy function:

 https://github.com/libgd/libgd/blob/1e47a89a65d49a9003d8365da4e26a7c1a32aa51/src/gd_webp.c#L220

 This abandoned PR added lossless support:
 https://github.com/libgd/libgd/pull/327 - it calls
 `WebPEncodeLosslessRGBA` when a lossless quality is specified.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35725#comment:147>
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