/digital-marketing-pro:image-seo-audit

Purpose

Perform a dedicated image optimization audit that evaluates all images on a page or site for SEO, performance, and accessibility. Produces a prioritized optimization list sorted by file size impact.

Input Required

• URL: Page or site to audit
• Scope: Single page or site-wide crawl (default: single page)

Process

1. Load brand context: Read active brand profile for industry context.
2. Discover images: Find all <img>, <picture>, CSS background-image, and <source> elements.
3. Alt text audit: Check presence, quality, keyword inclusion, length (10-125 chars). Flag: missing, filename-only ("image.jpg"), keyword-stuffed, non-descriptive ("click here").
4. File size audit: Apply tiered thresholds by image category — thumbnails (<50KB target, >200KB critical), content images (<100KB target, >500KB critical), hero/banner (<200KB target, >700KB critical).
5. Format audit: Check for modern formats. Recommend WebP (97%+ support) or AVIF (92%+ support) over JPEG/PNG. Check for <picture> element with format fallbacks. Note: JPEG XL restored in Chromium (Nov 2025) but not yet in Chrome stable — monitor, don't recommend yet.
6. Responsive images: Check for srcset and sizes attributes, appropriate resolution for device pixel ratios.