What is the WordPress `wp_generate_attachment_metadata` filter and how is it used to integrate custom image processing pipelines?

WordPress Expert Hard

WordPress Expert — Hard

What is the WordPress `wp_generate_attachment_metadata` filter and how is it used to integrate custom image processing pipelines?

Key points

  • This filter is crucial for integrating custom image processing pipelines
  • It allows for adding custom size entries and triggering external optimizations
  • The metadata array is modified and saved to postmeta for future use

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