How to Write Alt Text for Images Improve Accessibility and SEO

Alt text plays an essential role in web content, making images accessible for visually impaired users while enhancing SEO by helping search engines understand visual content. In this guide, you’ll learn how to craft effective alt text that is descriptive, concise, and SEO-friendly. If you’re working with numerous images, consider trying an AI image alt text generator to streamline the process and ensure consistent quality.

Why Is Alt Text Important for Your Website?

Alt text, or “alternative text,” is a short description added to an image’s HTML tag. It provides several benefits:

  • Accessibility: Screen readers use alt text to describe images for users with visual impairments.
  • SEO: Alt text helps search engines interpret and rank images, increasing visibility.
  • Fallback Content: If images fail to load, alt text informs users about the image’s content.

Best Practices for Writing Alt Text

Follow these steps to create alt text that enhances both accessibility and SEO:

1. Be Clear and Concise

Alt text should clearly describe the image in about 125 characters or fewer. For example, for a photo of a dog on a beach, you might write, “Golden retriever running on a sandy beach at sunset.”

2. Use Keywords Naturally

Include relevant keywords when they fit naturally within the description. For example, if your target keyword is “tropical vacation destinations,” alt text for an image might read, “Tropical beach with palm trees and turquoise water at sunset.”

3. Skip Redundant Words

Avoid starting with “image of” or “photo of,” as these are unnecessary. Instead of “Image of two children playing,” simply write “Two children playing on a playground.”

4. Add Context Where Needed

If an image is meant to convey a specific idea, add relevant context. For example, if it’s an image promoting sustainability, you could use, “Young woman holding a reusable shopping bag at a farmer’s market.”

5. Make Each Alt Text Unique

Using the same alt text for multiple images can harm SEO, so tailor each description to the specific image content.

Common Pitfalls to Avoid

To ensure your alt text is effective, avoid these common mistakes:

  • Keyword Stuffing: Overusing keywords makes alt text sound unnatural and may harm SEO.
  • Generic Descriptions: Vague phrases like “beautiful view” don’t offer helpful information for users or search engines.
  • Leaving Alt Text Blank: Omitting alt text misses an opportunity to improve accessibility and SEO.

Examples of Effective Alt Text

Here are some examples of optimized alt text:

  • For a landscape photo: “Rolling hills covered with wildflowers under a blue sky.”
  • For a recipe blog: “Vegan chocolate cake topped with fresh berries and powdered sugar.”
  • For a business setting: “Diverse team discussing project ideas in a modern office.”

Conclusion

Crafting well-optimized alt text is a small but significant way to improve accessibility and SEO on your website. Clear, relevant descriptions make your images accessible to a broader audience while increasing their visibility in search results.

For those managing many images, an AI image alt text generator can be a useful tool, helping you create high-quality, descriptive alt text quickly and consistently.