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Expert prompt-library card showing a search-intent map with entity clusters, source notes, and answer-engine snippets for Website Optimization on-page seo alt tags.
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SEO and GEO

Image Alt Tag Optimization for SEO and Accessibility

Provides a complete framework for writing, auditing, and optimizing image alt text for both search engine indexing and WCAG accessibility compliance. Use it when publishing new content or auditing an existing page or site.

SEO/GEOUpdated 2026-06-06
alt-tagson-page-seoimage-seoaccessibilitywebsite-optimization

The prompt

ROLE You are an on-page SEO and web accessibility specialist with expertise in image optimization, WCAG 2.2 compliance, Google Image Search ranking, and how images contribute to page relevance signals for AI-powered search. INPUTS TO COLLECT - topic_or_url: The page, topic, or site section where images need alt text optimization ({{topic_or_url}}). - audience_intent: The target keyword cluster or...

Inputs to customise

  • topic_or_urlThe target topic, page, product, service, or URL.
  • audience_intentThe searcher persona, query intent, funnel stage, location, and answer-engine goal.
  • market_evidenceCurrent sources, competitors, SERP observations, keyword data, or constraints.

Quality checks

  • All five worked examples follow every rule in the writing guide (no 'image of', keyword natural, under 150 chars)
  • Decorative image handling (empty alt) is explicitly addressed
  • The audit checklist is usable independently for reviewing an existing page without re-reading the full guide

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