[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 2nd-opinion needs-  |  performance
  testing changes-requested                      |
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Comment (by flixos90):

 @costdev @adamsilverstein To chime in here regarding the 2% number, I
 calculated that a few months ago, indeed based on StatCounter. This number
 ''is'' global, however the real number is somewhere between 1% and 3%
 global usage, which we can't determine exactly because Mac OS still
 reports the Catalina user agent for some newer versions like Big Sur
 (unfortunately it's exactly that difference between Catalina and Big Sur
 which defines whether WebP is supported in Safari or not).

 To summarize: Because the value is somewhere between 1 and 3%, we have
 sometimes been speaking about 2%, but no matter where in that range the
 real value lies, it is still above 1%. Per WordPress policy, any browser
 with less than 1% global usage does not need to be supported anymore. So
 while this is global usage, and while we ''do'' have to support that use-
 case, it is also very small and certainly almost at the point where we
 wouldn't even need to support it anymore, so if performance there isn't
 perfect, it's a very low impact at the large scale we're speaking.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55443#comment:153>
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