Glossary

Core Web Vitals

المؤشرات الجوهرية لتجربة الويب

Google's three quantified user-experience signals that are ranking factors: Largest Contentful Paint (LCP, target < 2.5 s), Interaction to Next Paint (INP, target < 200 ms), and Cumulative Layout Shift (CLS, target < 0.1). Gulf sites with heavy Arabic fonts and right-to-left layouts must be explicitly tuned — naive ports from LTR templates commonly fail CLS and LCP thresholds.

Related terms

Performance OptimizationOptimizing site speed through image compression, caching, CDN delivery, and code splitting. Target: Core Web Vitals (LCP < 2.5s, FID < 100ms, CLS < 0.1). Faster sites rank higher and convert better.
Interaction to Next Paint (INP)Google's responsiveness Core Web Vital that replaced First Input Delay (FID) in March 2024. INP measures the delay between a user's click or keypress and the next visible visual update. Target: under 200ms for a 'good' score. Common INP failures on bilingual Gulf sites: heavy JavaScript bundles, third-party analytics scripts, and large Arabic font files blocking the main thread. Must be audited separately from LCP.
Jamstack ArchitectureA web development approach that pre-builds every page as static HTML at deploy time, served via a global CDN, with dynamic functionality handled by client-side JavaScript and third-party APIs. Results in near-instant load times, zero server maintenance, and inherent security. Ideal for bilingual Gulf marketing sites where speed and SEO matter most. Next.js with Vercel or Netlify is the most common Jamstack implementation Lirevon uses for Gulf projects.
Image Optimisation (WebP & AVIF)Converting and serving images in next-generation formats (WebP, AVIF) that are 30–50% smaller than JPEG or PNG at equal quality. Combined with lazy loading, responsive srcset, and CDN delivery, optimised images are the single biggest factor in improving Largest Contentful Paint (LCP) for Gulf sites. Arabic-language hero images and RTL product photos must be re-optimised separately—a common oversight in agencies that port LTR designs to Arabic without re-running the image pipeline.

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