Glossary

Image Optimisation (WebP & AVIF)

تحسين الصور (WebP وAVIF)

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.

Related terms

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.
A/B TestingSimultaneously serving two variants of a web page (A and B) to different user segments and measuring which converts better. Used to test Arabic versus English headline emphasis, CTA button colour and placement, WhatsApp versus form as primary contact action, and pricing display format. In Gulf markets, even small A/B wins compound quickly because mobile conversion rates are the primary revenue driver—a 1% improvement in a high-traffic Gulf campaign page can mean hundreds of additional inquiries per month.
Web Font SubsettingReducing a web font file to include only the glyphs (characters) actually used on a given page. Arabic fonts present a unique subsetting challenge because the Arabic script requires positional variants (initial, medial, final, isolated) for every letter, making raw font files significantly larger than Latin equivalents. A full Arabic variable font can be 300–600 KB; a properly subsetted version serving only the used characters drops to 40–80 KB, dramatically improving LCP and reducing data usage for Gulf mobile users on metered connections.
Core Web VitalsGoogle'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.

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