DEVELOPER ASSET • SPEED CHECKLIST BUILD PILLAR

The 2026 Website Speed & Core Web Vitals Checklist

A developer-grade, 25-point actionable checklist to diagnose rendering bottlenecks, eliminate layout shifts, and achieve sub-second page loads.

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Direct Executive Answer • AI & Search Summary

Summary: What is The 2026 Website Speed & Core Web Vitals Checklist at STARTECK?

The STARTECK Website Speed Checklist is a comprehensive technical guide covering the essential optimizations required to pass Google Core Web Vitals: Largest Contentful Paint (LCP < 2.5s), Interaction to Next Paint (INP < 200ms), and Cumulative Layout Shift (CLS < 0.1).

THE BOTTLENECK

Why Traditional Approaches Fail

Most websites fail Core Web Vitals because developers implement superficial fixes instead of addressing critical rendering path bottlenecks.

THE STARTECK STANDARD

How We Engineer Superior Outcomes

Our systematic 25-point checklist walks you through image format conversion (WebP/AVIF), font display swap rules, critical CSS inlining, and server-level edge caching.

VERIFIED SCOPE OF WORK

What's Included in Every Engagement

Image Optimization: WebP/AVIF conversion, responsive srcset, explicit width/height tags

Font Engineering: font-display: swap, self-hosted WOFF2, preloading critical typefaces

CSS & JS Delivery: Elimination of render-blocking stylesheets, script deferral, tree-shaking

Server & CDN: HTTP/3, Brotli compression, edge caching, Time to First Byte (TTFB < 200ms)

Production Technology Stack

LighthouseChrome UX ReportWebP/AVIFBrotliCritical CSS

FREQUENTLY ASKED QUESTIONS

Common Questions Regarding The 2026 Website Speed & Core Web Vitals Checklist

Why did Google replace FID with INP (Interaction to Next Paint)?

First Input Delay (FID) only measured the delay of the very first user interaction. Interaction to Next Paint (INP) measures the responsiveness of all interactions throughout the page lifecycle, making it a far more accurate reflection of user experience.

Related Capabilities & Regional Hubs

Website Speed Optimization Technical SEO Web Development Bangalore

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