Seo Images

Runs a full image SEO audit on any URL, checking alt text quality, file sizes against tiered thresholds (thumbnails under 50KB, hero images under 200KB), modern format usage (WebP/AVIF), responsive images, lazy loading, and CLS prevention with width/height attributes. It catches common mistakes like lazy loading LCP images or keyword-stuffed alt text. If you have the DataForSEO MCP installed, it also pulls Google Images SERP data to show which domains own image rankings for your keywords and where you have page rankings but missing image presence. The optimization recommendations are sorted by potential file size savings, which is the right way to prioritize. Good for content-heavy sites where image performance actually matters for Core Web Vitals.

skills.sh installs: 7.5K
GitHub stars: 27.8K
last updated: Aug 21, 2026

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Install

$ npx -y skills add agricidaniel/claude-seo --skill seo-images --agent claude-code

Installs into .claude/skills of the current project.

Files

Image Optimization Analysis

Checks

Alt Text

Present on all <img> elements (except decorative: role="presentation"). parse_html.py marks these with decorative: true; do not flag them for missing alt text.
Descriptive: describes the image content, not "image.jpg" or "photo"
Includes relevant keywords where natural, not keyword-stuffed
Length: 10-125 characters

Good examples: