The alt attribute provides an alternative description for a non-text element1 and normally is not presented to the user but will be available under certain circumstances. The following is the most general guideline to follow while creating an alternate text:
Boost your website’s quality by auditing your page with SiteLint, a chromium-based extension that improves accessibility, quality, technical SEO, and provides easy-to-understand reports to help you prioritize and fix issues.
