Ultimate Guide to Alt Tags for Image Links: Best Practices for SEO and Web Accessibility

November 24, 2023
Alt Tags Image Links

In today’s digital landscape, images are crucial in engaging website visitors and conveying information effectively. However, search engines rely on textual cues to understand and index content, making it essential to optimise images for search engine optimisation (SEO). Alt tags (alternative text) for image links provide a descriptive text alternative for multiple purposes, including improving SEO and enhancing web accessibility. This blog will explore the ideal practices for utilising alt tags for image links.

Understanding Alt Tags for Image Links: 

Alt tags are HTML attributes that provide a concise and descriptive text alternative to images when they cannot be displayed or accessed. When an image is linked, the alt tag serves as the anchor text for the link, providing vital context to search engines and users who rely on screen readers. 

Importance of Alt Tags for SEO: 

Search engines cannot “see” images, so alt tags help them understand the content and relevance of the pictures on your website. By optimising alt tags with relevant keywords and descriptive text, you provide search engines with valuable information to index and rank your web pages more accurately. It can lead to improved visibility and organic traffic.

Optimising Alt Tags for Image Links: 

When using alt tags for image links, it’s crucial to follow these best practices:

  • Be descriptive: Write concise and accurate descriptions that effectively convey the content and purpose of the image.
  • Use relevant keywords: Incorporate relevant keywords naturally into the alt text, but avoid keyword stuffing.
  • Be specific: Provide details about the image without being overly lengthy or repetitive.
  • Use complete sentences or phrases: Ensure the alt text makes sense and provides meaningful information.
  • Avoid using “image of” or “picture of” unless necessary: Use these phrases sparingly as they are implicit when using alt tags for images.
  • Maintain consistency: Use consistent alt tags across similar images or instances where the content is the same.

Enhancing Web Accessibility: 

Alt tags are crucial for web accessibility as they provide visually impaired users with screen readers a textual description of images. By crafting descriptive and meaningful alt tags, you ensure that individuals with visual impairments can fully understand the purpose and context of the pictures on your website. It fosters inclusivity and improves the overall user experience.

Common Mistakes to Avoid:
  • Leaving alt tags blank or using generic placeholders like “image” or “photo.”
  • Using alt tags solely for SEO purposes without considering accessibility.
  • Overstuffing alt tags with keywords can be seen as spammy and harmful to SEO.
  • Using alt tags as hidden keyword stuffing makes them invisible to sighted users.

Testing and Validation: 

Use accessibility validation tools and conduct manual checks to verify the accuracy and effectiveness of your alt tags.


Alt tags for image links are vital to SEO and web accessibility. By implementing descriptive and keyword-rich alt tags, you can improve your website’s visibility in search engine rankings while ensuring that users with disabilities can understand the content of your images. Following the practices outlined in this guide, you can optimise your alt tags for image links, enhance your SEO efforts, and provide a more inclusive online experience for all users.

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