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seo-images

Audit HTML image markup for SEO and performance optimization.

Updated May 23, 2026
Search Tags:#lazy loading#responsive images#image optimization#alt text#webp avif conversion#google images seo
One-click install
npx skills add https://github.com/lugondev/claude-seo --skill seo-images-lugondev
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: seo-images
Source: https://github.com/lugondev/claude-seo/tree/main/skills/seo-images
Command: npx skills add https://github.com/lugondev/claude-seo --skill seo-images-lugondev

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill solves the performance and visibility loss caused by poorly optimized images, missing accessibility signals, and inefficient formats that slow down pages and weaken image search competitiveness.

Core Features & Use Cases

  • Alt text and markup quality checks: Validates descriptive alt text, flags weak or missing descriptions, and ensures CLS-safe dimensions (width/height or aspect-ratio).
  • Performance-focused image audits: Reviews file sizes, formats, responsive image patterns (srcset/sizes), lazy-loading strategy, and LCP image handling (e.g., fetchpriority).
  • Image SERP and competitive landscape (DataForSEO): When available, correlates on-page images with Google Images SERP patterns for keyword-level opportunities.
  • On-demand image file optimization: Converts to WebP/AVIF, injects IPTC/XMP metadata when possible, generates responsive variants, and produces an AVIF/WebP/JPEG HTML <picture> recipe.

Quick Start

Ask the skill to audit and optimize images by saying: seo-images https://example.com/page-with-images.

Frequently Asked Questions about seo-images

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I audit images for SEO and fix missing alt text on my web pages?▼

To audit images for SEO, the skill analyzes HTML markup to validate descriptive alt text presence and length, flags weak or missing descriptions, and checks for CLS-safe dimensions like width, height, or aspect-ratio to improve page accessibility and search ranking.

What is the best way to optimize images for page performance using WebP and AVIF formats?▼

Optimizing images for page performance involves converting files to WebP or AVIF formats, generating responsive variants, and producing an HTML <picture> recipe with srcset and sizes attributes to ensure efficient delivery and faster load times across devices.

How does lazy loading strategy affect LCP images and Core Web Vitals?▼

Lazy loading strategy affects LCP images by delaying offscreen image rendering while requiring fetchpriority attributes for LCP-safe image handling, preventing layout shifts (CLS) and improving overall Core Web Vitals performance scores.

Can I analyze Google Images SERP patterns for keyword-level opportunities?▼

Yes, you can analyze Google Images SERP patterns for keyword-level opportunities using optional DataForSEO integration, which correlates on-page images with search engine results page patterns to identify competitive visibility gaps.

Does this image optimization approach inject IPTC and XMP metadata into files?▼

Yes, the image optimization approach injects IPTC and XMP metadata into files when possible during on-demand file conversion to WebP or AVIF, ensuring search engines can parse embedded metadata for enhanced image search competitiveness.

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