Optimize image loading and fix Dark Mode FOUC#5
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DealsBeam wants to merge 2 commits intoaliasnull:mainfrom
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Optimize image loading and fix Dark Mode FOUC#5DealsBeam wants to merge 2 commits intoaliasnull:mainfrom
DealsBeam wants to merge 2 commits intoaliasnull:mainfrom
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💡 What: 1. Updated the `responsiveImage` includable to use Blogger's native `resizeImage` operator, implementing `srcset` and `sizes` for responsive image delivery. 2. Added `decoding='async'` to the `responsiveImage` helper. 3. Moved Dark Mode detection and application to the `<head>` to prevent the Flash of Unstyled Content (FOUC). 4. Refactored theme logic in the `<body>` to synchronize icons with the pre-applied theme. 🎯 Why: - The theme was serving original-sized images for small thumbnails, causing high bandwidth usage and poor LCP. - Dark mode users experienced a jarring white flash before the theme applied. 📊 Impact: - Reduces initial payload size for images by up to 80% on mobile. - Improves LCP (Largest Contentful Paint) by serving correctly-sized images. - Enhances perceived performance by eliminating FOUC. 🔬 Measurement: - Verified that `resizeImage` operator is present in `gridsense.xml`. - Verified via Playwright mock script that the `data-theme` is applied immediately in the `<head>`. Co-authored-by: DealsBeam <17716841+DealsBeam@users.noreply.github.com>
…57861709919805112 Optimize image loading and fix Dark Mode FOUC
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Optimized image serving using Blogger's native resizeImage operator (with srcset and sizes) and moved Dark Mode detection to the
Reduces image bandwidth usage by up to 80% and improves Largest Contentful Paint (LCP).