Last update: Apr 27, 2026 Reading time: 4 Minutes
Image alt text, also known as alternative text, describes the content of an image on a webpage. It is a vital component of web accessibility, allowing individuals with visual impairments to interpret the content of images through screen readers. Additionally, alt text plays a crucial role in SEO, providing search engines with context about the image, facilitating better indexing, and ultimately enhancing the website’s visibility.
The web should be an inclusive space for everyone, regardless of their abilities. Image alt text contributes significantly to this goal by enabling users with disabilities to engage with content that they might otherwise miss. When alt text is appropriately used, it allows screen readers to convey the essence of images, making the experience more enriching and informative.
Search engines, like Google, utilize image alt text to understand the content of images on web pages. This understanding can lead to higher rankings in search results. Here’s how alt text contributes to better SEO:
To maximize the effectiveness of image alt text in improving both accessibility and SEO, follow these best practices:
Alt text enhances SEO by allowing search engines to better understand image content, leading to improved indexing and higher search rankings.
While it might be tempting to reuse alt text, it is better to create unique descriptions for each image to provide a distinct context and maximize SEO benefits.
Avoid vague or ambiguous terms, keyword stuffing, and unnecessary phrases like “image of” to ensure clarity and relevance.
In summary, utilizing image alt text correctly is an impactful strategy for both improving website accessibility and enhancing SEO efforts. Crafting clear and descriptive alt text allows visually impaired users to engage with your content while enabling search engines to index it effectively. For further information on optimizing your website holistically, explore our guide on the website redesign SEO checklist.
Incorporating these techniques not only benefits those who rely on screen readers but also drives organic traffic and improves your site’s overall performance in search engines. For a comprehensive understanding of website accessibility, consider conducting a website accessibility audit to identify areas of improvement.