[wp-trac] [WordPress Trac] #55443: Create WebP sub-sizes and use for output

[WordPress Trac]

#55443: Create WebP sub-sizes and use for output
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 Reporter:  adamsilverstein                      |       Owner:
                                                 |  adamsilverstein
     Type:  enhancement                          |      Status:  assigned
 Priority:  normal                               |   Milestone:  6.1
Component:  Media                                |     Version:  6.0
 Severity:  normal                               |  Resolution:
 Keywords:  has-unit-tests needs-dev-note        |     Focuses:
  needs-docs needs-user-docs needs-patch 2nd-    |  performance
  opinion needs-testing changes-requested        |
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Comment (by costdev):

 > Also the current proposal is to not create duplicate images at all.
 Instead there would be a threshold. > Smaller sizes will be WebP as it
 seems that's most efficient there. Larger sizes will continue to be JPEG.
 These larger sizes will also be used as fallback where WebP is not
 supported.

 Query: If I, for example, upload a JPEG that's 1024x1024 and 512KB, and
 the feature creates thumbnails, does that mean that the 1024x1024 and
 512KB JPEG would be used as a fallback if WebP isn't supported, even if
 the display size is 150x150?

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Ticket URL: <https://core.trac.wordpress.org/ticket/55443#comment:141>
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