---
type: Article
title: "Image SEO at Scale for Modern Frameworks"
description: "Image SEO at scale on JS-heavy sites: AVIF/WebP choice, srcset, alt text, ImageObject schema, CDNs, and CI budgets that prevent image-driven LCP regressions."
resource: "https://prerendering.com/blog/image-seo-at-scale-for-modern-frameworks"
tags: [image seo, core web vitals, performance, avif, webp, technical seo]
timestamp: 2026-04-25T00:00:00Z
---

# Image SEO at Scale for Modern Frameworks

Image SEO at scale on JS-heavy sites: AVIF/WebP choice, srcset, alt text, ImageObject schema, CDNs, and CI budgets that prevent image-driven LCP regressions.

A practical guide to image SEO at scale covering AVIF and WebP format choice, srcset and sizes, lazy loading, ImageObject schema, image CDNs, prerendering interactions, and CI budgets that prevent image-driven LCP regressions.

## Details

- Category: Technical SEO
- Reading time: 13 min
- Topics: Image SEO, Core Web Vitals, Performance, AVIF, WebP, Technical SEO

## Related

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- [Lighthouse CI for Technical SEO Validation](/blog/lighthouse-ci-for-technical-seo.md)
- [Prerendering for Technical SEO and AI Visibility](/blog/prerendering-for-technical-seo.md)
- [Technical SEO audit](/services/technical-seo-audit.md)