Optimize image alt text and file sizes

Analyze and optimize image alt text, file size, and SEO compliance

Image-heavy sites (ecommerce, publishing) where alt text + file size optimization unlock Core Web Vitals and AI-search citation readiness together.

• · target URL

• · alt text audit (missing, descriptive, length, keyword naturalness)
• · file size analysis by category (thumbnails, hero, product, body)
• · image optimization recommendations (format, compression, lazy loading)
• · WebP conversion and filename suggestions

• · fetch_page.py (HTML + images)
• · magick or equivalent (file size analysis, format detection)

• · target is live and image-heavy

• · images blocked by robots.txt — size analysis skipped
• · lazy loading prevents initial load — images not analyzed until viewport intersects

• · alt text validation (present, descriptive, length 10-125 chars, keyword natural, not filename/decorator)
• · tiered file size thresholds by category (thumbnails <50KB, hero <200KB, body <150KB)
• · format optimization recommendations (WebP, modern codecs)
• · lazy loading detection and recommendation
• · filename SEO (keyword-friendly, hyphens, lowercase)
• · image-context analysis (in article, product, hero, decoration)