Alt text, short for “alternative text,” is a description added to an image in HTML using the alt
attribute. It serves multiple purposes: providing context for visually impaired users via screen readers, helping search engines understand image content, and displaying text when images fail to load.
Why is Alt Text Important?
- Accessibility: Enables visually impaired users to understand image content through assistive technologies like screen readers.
- SEO Benefits: Helps search engines index images, improving visibility and rankings in image search results.
- User Experience: Displays descriptive text when images fail to load, ensuring better usability.
Best Practices for Writing Alt Text
- Be concise and specific about the image content.
- Avoid starting with phrases like “Image of” or “Picture of.”
- Include relevant keywords without overstuffing.
- Keep it under 125 characters for clarity and compatibility with screen readers.
Alt text is a crucial element for web accessibility and SEO, making websites more inclusive and discoverable.