What is Alt Text?

Alternative Text, or Alt Text, is an attribute that can be added to an HTML image tag. It provides a textual description of the image, which helps search engines like Google better understand the content of the picture. This is particularly important for visually impaired users who rely on screen readers to access website content.

From an SEO standpoint, Alt Text serves several purposes:

Enhances Image Indexing: Search engines use Alt Text to identify and index images. Therefore, adequately optimized Alt Text can help your images rank higher in Google Images search results, potentially driving more traffic to your website.

Improves User Experience: Alt Text is crucial for visually impaired users who rely on screen readers. It also helps when images fail to load, or users have disabled images in their browser settings.

Provides Context: Alt Text adds context to your images, allowing search engines to understand the image’s relevance concerning the content on the page. This can have a positive impact on your overall SEO efforts.

Google’s Best Practices for Image Alt Text Usage

To make the most of Alt Text for SEO, it is essential to follow Google’s best practices, which are designed to help you create practical and accessible Alt Text:

Be Descriptive and Accurate: Your Alt Text should accurately describe the image’s content. Avoid using vague descriptions instead of providing a clear and concise explanation that helps search engines and users understand the image.

Be Succinct: Although it is essential to be descriptive, try to keep your Alt Text relatively short. Aim for around 125 characters, as screen readers may truncate longer descriptions.

Avoid Keyword Stuffing: While including relevant keywords in your Alt Text is essential, do not overdo it. Keyword stuffing can lead to a negative user experience and may be penalized by search engines.

Use Unique Alt Text for Each Image: When you have multiple images on a page, use unique Alt Text for each one. This helps search engines differentiate between the images and understand their relevance to the content.

Don’t Use Alt Text for Decorative Images: If an image serves only a decorative purpose and has no meaningful content, it is better to leave the Alt Text attribute empty. This ensures that screen readers don’t waste users’ time by reading irrelevant descriptions.

Optimizing Your Images with Alt Text

Now that you know the importance of Alt Text in SEO and Google’s best practices, it’s time to optimize your images. Here are some tips to get you started:

Choose Relevant Images: The images you use on your website should be relevant to the content and provide additional context or value. This makes it easier to create meaningful Alt Text descriptions.

Prioritize Important Images: Focus on adding Alt Text to images most relevant to your content, such as product images, diagrams, or infographics.

Review Existing Alt Text: If you have previously added Alt Text to your images, take the time to review and update them according to Google’s best practices. This will ensure that your existing content remains optimized for search engines.

Use a Consistent Format: Adopt a consistent format for your Alt Text to maintain a coherent structure across your website. For example, you could start with a general description of the image followed by specific details.

Monitor Image Search Performance: Keep an eye on your image search performance in Google Search Console. This will help you identify opportunities for improvement and understand the impact of your Alt Text optimization efforts.


Alt Text plays a vital role in SEO by helping search engines understand and index your images. By following Google’s best practices and optimizing your images with accurate, concise, and relevant Alt Text, you can improve your website’s search engine rankings and provide a better user experience for all visitors, including those with visual impairments.

As you continue to create and optimize your website’s content, remember that Alt Text is an essential element of your overall SEO strategy. By incorporating these best practices and tips, you will be well on your way to achieving greater visibility and success in the competitive world of online search.