[wp-trac] [WordPress Trac] #58773: Lazy Load oEmbed iframes

[WordPress Trac]

#58773: Lazy Load oEmbed iframes
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 Reporter:  adamsilverstein          |       Owner:  adamsilverstein
     Type:  defect (bug)             |      Status:  assigned
 Priority:  normal                   |   Milestone:  6.4
Component:  Embeds                   |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  needs-testing has-patch  |     Focuses:  performance,
  has-unit-tests                     |  sustainability
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Comment (by adamsilverstein):

 Note in [attachment:"before-change.jpg"] a default YouTube embed does not
 contain a loading attribute (on trunk).

 With the patch applied in [attachment:"lazy.jpg"] we see the
 loading="lazy" attribute be ing applied.

 For a test post with a WordPress post embed, note that the `data-secret`
 attribute prevents the addition of the loading="lazy" attribute - see
 [attachment:"wpembed.jpg"].

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Ticket URL: <https://core.trac.wordpress.org/ticket/58773#comment:4>
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