Alt Text

Alt text (alternative text) is a text description added to the alt attribute of an HTML image tag. It serves two primary purposes: accessibility (screen readers use it to describe images to visually impaired users) and SEO (search engines use it to understand image content since they cannot see images). Good alt text is descriptive, concise (under 125 characters), includes relevant keywords naturally, and accurately describes what the image shows. Avoid keyword stuffing in alt text — it should read naturally as a description. Images without alt text are missed SEO opportunities and accessibility violations.