Improve Website Accessibility with GPT-4o & Google Sheets

This n8n workflow enhances website accessibility by scanning any webpage for images with poor or missing alt texts. It downloads the HTML, extracts img tags and their alt attributes, identifies those needing improvement (e.g., alt length <50 chars), and uses GPT-4o with vision capabilities to generate rich, descriptive alt texts based on the actual image content.

Results are logged and updated in a Google Sheet, allowing users to review, approve, and apply changes manually or via further automation. Benefits include compliance with WCAG standards, boosted SEO rankings through better alt text optimization, and significant time savings for web maintainers—no manual inspection or AI prompting required.

Ideal for bloggers, SEO specialists, web developers, and marketing teams managing content-heavy sites. Use cases: Routine audits of personal blogs, e-commerce product pages, or corporate sites to ensure inclusivity and search performance. Scales easily for multiple URLs via workflow triggers.

The workflow integrates HTTP requests, custom code for parsing, filtering logic, OpenAI API, and Google Sheets—robust yet user-friendly for non-coders.