Dev Tools · 1h ago
Blazor WASM site cuts LCP from 8s to under 2s without rewrite
A developer optimized a 38-page Blazor WebAssembly tax calculator site on Cloudflare Pages, reducing mobile LCP from 6-8 seconds to under 2 seconds. Six fixes included removing a service worker, preconnecting to CDN edges, and minifying CSS. The site avoided a rewrite to Next.js, proving Blazor can meet Core Web Vitals.
Meridian48 take
The post is a practical counterexample to the dogma that Blazor WebAssembly is inherently slow, showing that targeted performance fixes can rival JS frameworks.
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How I got LCP under 2s on a 38-page Blazor WebAssembly site (Cloudflare Pages) →
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blazor-webassemblyperformance-optimization