[wp-trac] [WordPress Trac] #62413: WordPress 6.7 Auto-sizes Reducing Image Sizes

[WordPress Trac]

#62413: WordPress 6.7 Auto-sizes Reducing Image Sizes
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 Reporter:  dooperweb                            |       Owner:  joemcgill
     Type:  defect (bug)                         |      Status:  closed
 Priority:  normal                               |   Milestone:  6.7.1
Component:  Media                                |     Version:  6.7
 Severity:  normal                               |  Resolution:  fixed
 Keywords:  has-testing-info has-patch has-      |     Focuses:
  unit-tests                                     |  performance
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Changes (by flixos90):

 * status:  reopened => closed
 * resolution:   => fixed


Comment:

 In [changeset:"59415" 59415]:
 {{{
 #!CommitTicketReference repository="" revision="59415"
 Media: Avoid images with `sizes=auto` to be displayed downsized in
 supporting browsers.

 Based on the user agent stylesheet rules outlined in
 https://html.spec.whatwg.org/multipage/rendering.html#img-contain-size,
 images that have `sizes=auto` while applying `width: auto` or `width: fit-
 content` would be constrained to only 300px width.

 This changeset overrides said user agent stylesheet rule with a much
 larger constraint, to avoid the problem.

 Additionally, it introduces a filter `wp_img_tag_add_auto_sizes` which can
 be used to opt out of the functionality, as an additional measure.

 Props joemcgill, flixos90, dooperweb, SirLouen, azaozz, mukesh27, apermo.
 Fixes #62413.
 See #61847, #62345.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/62413#comment:42>
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