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Media: Optimize images created in shortcodes.

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This fixes an issue where images dynamically created during shortcode rendering (e.g., shortcode image galleries), were not getting image optimizations like `loading="lazy"` or `fetchpriority="hight"` applied. Note that even after this commit, shortcodes are processed after the main content images, which can affect the order in which optimizations are applied in content areas.

Follow-up to [56037].

Props spacedmonkey, flixos90, thekt12, swissspidy, joemcgill.
Fixes #58681.


git-svn-id: https://develop.svn.wordpress.org/trunk@56214 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Joe McGill
2023-07-11 13:56:55 +00:00
parent baec3f39c1
commit ed174730d3
3 changed files with 149 additions and 4 deletions
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src/wp-includes/media.php
+3 -2
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@@ -5725,9 +5725,10 @@ function wp_get_loading_optimization_attributes( $tag_name, $attr, $context ) {
/*
* The first elements in 'the_content' or 'the_post_thumbnail' should not be lazy-loaded,
* as they are likely above the fold.
* as they are likely above the fold. Shortcodes are processed after content images, so if
* thresholds haven't already been met, apply the same logic to those as well.
*/
if ( 'the_content' === $context || 'the_post_thumbnail' === $context ) {
if ( 'the_content' === $context || 'the_post_thumbnail' === $context || 'do_shortcode' === $context ) {
// Only elements within the main query loop have special handling.
if ( is_admin() || ! in_the_loop() || ! is_main_query() ) {
$loading_attrs['loading'] = 'lazy';