Optimize images for SEO and Core Web Vitals
seo-imagesskillsetup L1★0
Sheshiyer/skill-clusters ↗What it does
Audit images for SEO, alt text, format, size, responsive srcset, and lazy loading
Best for
Image optimization audits focusing on SEO signals (alt text, file size, format, responsive srcset) and Core Web Vitals (CLS prevention, lazy loading, fetchpriority).
Inputs
- · Website URL or HTML containing images
Outputs
- · Audit summary table, image-by-image recommendations sorted by file size impact, prioritized optimizations
Requires
- · WebFetch or web crawler
Preconditions
- · Website URL accessible and crawlable
Failure modes
- · URL unreachable or robots.txt blocks image discovery
- · Cannot assess image alt text from DOM without rendering
- · File sizes only known for publicly accessible images
Trust signals
- · Tiered file size thresholds by image category
- · Recommends WebP/AVIF with JPEG XL emerging format note
- · CLS prevention checks for width/height attributes or aspect-ratio CSS