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Screaming Frog Lazy-Loading Custom Extraction Config
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# TIPS | |
1) Remove the count function and paste into dev tools to test further | |
2) To spot additonal oportunities swap the img selector to video, iframe or wildcards | |
3) Render JS in SF to discover all images and spot differences | |
4) Spot check source to find different lazy loading libraries e.g. Lazysizes, JQuery Lazy, yall.js etc | |
# CAVEATS | |
1) Don't forget to check background CSS images | |
2) Other implimentaiton techniques may exist, adapt this approach to suit your needs e.g yall.js - lazy-bg-loaded | |
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1) All images | |
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count(//img) | |
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2) All lazy-loaded images | |
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count(//img[contains(@loading,'lazy') or contains(@class,'lazy') or contains(@class,'lazyloaded')]) | |
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3) Images not lazy-loaded | |
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count(//img[not(contains(@loading,'lazy') or contains(@class,'lazy') or contains(@class,'lazyloaded'))]) | |
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4) Loading lazy attribute | |
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count(//*[contains(@loading, 'lazy')]) | |
----------- | |
5) Lazy class | |
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count(//*[contains(@class, 'lazy')]) | |
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6) Lazyloaded class | |
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count(//*[contains(@class, 'lazyloaded')]) | |
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7) Data-lazy attribute | |
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count(//@*[contains(name(),'data-lazy')]) |
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