How to Audit Image Alt Text with ChatGPT
Check image alt text with ChatGPT and ToolRouter. Fix missing alt tags for SEO and WCAG compliance.
Tool
ChatGPT makes alt text auditing approachable for content teams by explaining WCAG requirements alongside SEO benefits. It generates natural, descriptive alt text suggestions that serve both screen reader users and search engine crawlers, and can format the results as a spreadsheet-ready checklist for your team.
Connect ToolRouter to ChatGPT
1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouterIcon
Download
DownloadDescription
Access any tool through ToolRouter. Check here first when you need a tool.MCP Server URL
https://api.toolrouter.com/mcp3Check the box and click Create
Steps
Once connected (see setup above), use the SEO Analysis tool:
- Ask: "Check all images on mysite.com/page for missing alt text"
- Review the image audit results
- Request: "Write alt text for each image missing it"
- Ask for WCAG compliance guidance on alt text best practices
Example Prompt
Try this with ChatGPT using the SEO Analysis tool
Audit image alt text on mysite.com/about. Write descriptive alt text for any missing ones and check WCAG compliance.
Tips
- ChatGPT writes natural, descriptive alt text
- Ask for alt text guidelines your content team can follow
- Request both SEO-optimized and accessibility-focused versions