Missing alt attribute inspection

Detects <img> elements without the alt attribute.

Always use the alt attribute to provide a textual alternative to non-text content (in our case, to screenshots and icons) on web pages.

The purpose of using the alt attribute is to:

• Make the page accessible to people who use screen readers.

• Display information about non-textual page elements when they cannot be displayed.

• Provide search engines with semantic information about the page contents.