Alt Text Checker
Check alt text on images for SEO and accessibility. This free tool scans any webpage for image alt attributes and identifies missing or empty alt text that could hurt your search rankings and accessibility compliance. Need help optimizing images? Check out our Image Alt Text Generator or join the community.
Enter your URL
Provide the webpage URL you want to check for image alt text compliance.
Scan images
The tool extracts all images and analyzes their alt attributes for completeness.
Review results
Get a detailed report showing which images have alt text and which are missing it.
Check Image Alt Text
Why Alt Text Matters for SEO and Accessibility
Alt text (alternative text) describes images for users who cannot see them, including screen reader users and when images fail to load. Search engines also use alt text to understand image content, which can improve your rankings in both web and image search results.
Best practices include writing descriptive alt text (under 125 characters), avoiding keyword stuffing, and ensuring every meaningful image has alt text. Decorative images should use empty alt attributes (alt="") to avoid cluttering screen readers.