Free Image Alt Text Checker

Image alt text helps search engines understand your images while also improving accessibility for users who rely on screen readers. Missing or poorly written alt text can reduce image SEO performance and make your website less accessible.

Our free Image Alt Text Checker scans your HTML to identify images with missing, empty or duplicate alt attributes. Simply paste your code to instantly review your image optimisation and discover areas for improvement.

Whether you’re auditing an existing website or checking new content before publishing, this tool helps ensure every image follows SEO and accessibility best practices.