Drupal cache, images and Core Web Vitals
A Drupal site can be slow for several reasons. Core Web Vitals helps separate loading, responsiveness and visual stability problems.
Where problems appear
Core Web Vitals measures user-visible experience. Drupal sites often repeat the same causes: images are too large, caching is incomplete, JavaScript blocks rendering or components shift while loading.
Check:
- whether image styles produce correctly sized files;
- whether lazy loading is used correctly;
- whether cache headers and Drupal cache are configured;
- whether third-party scripts slow down the front page;
- whether font and image dimensions are known in advance.
Why a plugin is not enough
A performance module can help, but the wrong configuration can create new defects. Measure first, then change.
WebPro connects performance fixes with Drupal development, audits and, when useful, automated testing. That makes it possible to check that a speed fix does not break forms, menus or editorial workflow.
Kaido Toomingas
WebPro Company OÜ
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