--- title: When All You Can Do Is All or Nothing, Do Nothing – CSS... description: When a design system or CMS cannot determine whether an image will appear above or below the fold, blindly applying `loading=lazy` or `fetchpriority=high` can... canonical: https://daily.dev/posts/when-all-you-can-do-is-all-or-nothing-do-nothing-css-wizardry-ctzzbasx6 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: When All You Can Do Is All or Nothing, Do Nothing – CSS Wizardry | daily.dev og:description: When a design system or CMS cannot determine whether an image will appear above or below the fold, blindly applying `loading=lazy` or `fetchpriority=high` can... og:url: https://daily.dev/posts/when-all-you-can-do-is-all-or-nothing-do-nothing-css-wizardry-ctzzbasx6 og:image: https://api.daily.dev/og/posts/CtzZBAsX6.png og:image:alt: When All You Can Do Is All or Nothing, Do Nothing – CSS Wizardry og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # When All You Can Do Is All or Nothing, Do Nothing – CSS Wizardry **[CSS Wizardry](https://daily.dev/sources/csswizardry)** · [@csswizardry](https://daily.dev/csswizardry) · 6 min read · 1 upvotes · 0 comments ## Summary When a design system or CMS cannot determine whether an image will appear above or below the fold, blindly applying `loading=lazy` or `fetchpriority=high` can actively harm performance rather than help it. Lazy-loading an LCP candidate delays the most important image; marking multiple images as high priority turns a useful hint into noise. The safer default is to omit these attributes entirely and let the browser use its own heuristics. These are contextual hints, not magic speed-up attributes, and they only work when applied with certainty. If a system gains enough context to apply them precisely, it should — but until then, doing nothing is better than doing the wrong thing. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Lazy Loading Images and Media: How Far Ahead Browsers Fetch](https://daily.dev/posts/lazy-loading-images-and-media-how-far-ahead-browsers-fetch-ziilpaeil) · Calibre · 1 upvotes · 0 comments - [Ending Responsive Images](https://daily.dev/posts/ending-responsive-images-jvntuvxno) · Cloud Four · 88 upvotes · 4 comments - [Image Optimization for Core Web Vitals in 2026: What Actually Moves the Needle](https://daily.dev/posts/image-optimization-for-core-web-vitals-in-2026-what-actually-moves-the-needle-jzw6k1lio) · SitePoint · 11 upvotes · 0 comments - [Issue \#639](https://daily.dev/posts/issue-639-bwd9nwbpk) · CSS Weekly · 3 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#design-systems](https://daily.dev/tags/design-systems) [View this post on daily.dev](https://daily.dev/posts/when-all-you-can-do-is-all-or-nothing-do-nothing-css-wizardry-ctzzbasx6) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"When All You Can Do Is All or Nothing, Do Nothing – CSS Wizardry","url":"https://daily.dev/posts/when-all-you-can-do-is-all-or-nothing-do-nothing-css-wizardry-ctzzbasx6","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/when-all-you-can-do-is-all-or-nothing-do-nothing-css-wizardry-ctzzbasx6"},"datePublished":"2026-03-27T17:59:07.881Z","dateModified":"2026-03-28T14:00:16.312Z","description":"When a design system or CMS cannot determine whether an image will appear above or below the fold, blindly applying `loading=lazy` or `fetchpriority=high` can...","image":"https://media.daily.dev/image/upload/s--0_ODbtD2--/f_auto/v1722860399/public/Placeholder%2008","thumbnailUrl":"https://media.daily.dev/image/upload/s--0_ODbtD2--/f_auto/v1722860399/public/Placeholder%2008","isAccessibleForFree":true,"articleSection":"CSS Wizardry","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Person","name":"Harry Roberts","url":"https://daily.dev/csswizardry","image":"https://media.daily.dev/image/upload/s--6zcMNpvC--/f_auto/v1755686282/avatars/avatar_Lw7jrTalrSeSbSjzuBQBH?_a=BAMClqZW0","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":230}},"commentCount":0,"discussionUrl":"https://daily.dev/posts/when-all-you-can-do-is-all-or-nothing-do-nothing-css-wizardry-ctzzbasx6","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"webdev,design-systems","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"CSS Wizardry","item":"https://daily.dev/sources/csswizardry"},{"@type":"ListItem","position":3,"name":"When All You Can Do Is All or Nothing, Do Nothing – CSS Wizardry"}]} ```