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Find images without a loading attribute on a page

harmlessImages and performancedebian, ubuntu
Adjust the values, the command updates live
user@server
curl -s https://example.com/ | tr '\n' ' ' | grep -oiE '<img[^>]*>' | grep -vi 'loading='

Prints every <img> element without a loading attribute. Images below the fold should carry loading="lazy" so they do not slow down the initial page render. No output means all images have a loading attribute.

Note: Do not lazy load the main image above the fold (the LCP element), otherwise LCP gets worse. To see which images do have loading="lazy", end the pipe with grep -i 'loading="lazy"' instead of grep -vi.

Also searched as

  • check lazy loading images
  • images without loading lazy
  • defer offscreen images pagespeed
  • are images lazy loaded

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