Alt tag & title tag

Alt tags and title tags: Essential for SEO and improved accessibility

In the refined art of search engine optimization (SEO), alt tags and title tags play a crucial role by helping to improve both the visibility and accessibility of a website. These attributes are not only essential for indexing and ranking in the search results pages (SERPs), but are also invaluable for accessibility by making the content of images and links accessible to visually impaired users via screen readers.

The importance of alt tags

Alt tags, formally known as “alt attributes”, are of central importance for image optimization. They provide a textual description of image content on websites and are therefore crucial for image searches in search engines. A precisely worded alt tag describes the content and context of an image, which not only increases the relevance of the page for specific search queries, but also improves the user experience for people with visual impairments.

How to use alt tags effectively:
  • Accuracy: The description in the alt tag should precisely reflect the content and function of the image on the website.
  • Relevance: Integrate keywords that are relevant to the image and the context of the page, but without falling into “keyword stuffing”.
  • Clarity: Avoid vague descriptions and make sure that any alt text is clear and understandable.

The role of title tags

Title tags, sometimes simply referred to as “title attributes”, provide additional information about links and images. They appear as small tooltips when the user moves the mouse over an element. These tags are particularly useful for giving users more context about the link or image, which improves the user experience and can increase the interaction rate.

Best practices for title tags:
  • Contextuality: Provide additional information that helps the user understand what to expect when they click on a link or what an image represents.
  • Conciseness: Keep the information short and sweet to avoid overload and increase readability.
  • Additional value: Use title tags to provide additional value beyond what is already provided in the alt tag or visible text.

The impact on SEO and user experience

The correct use of alt and title tags directly influences the search engine optimization of a website. Search engines such as Google use these tags to better understand the content of a page and assess its relevance for certain search queries. By improving image and link descriptions, websites can achieve higher positions in the SERPs.

These tags also play a crucial role in accessibility. By describing visual content in text, they enable screen readers to make this content accessible to visually impaired users, which not only underlines the ethical responsibility of web developers, but also fulfills legal requirements that increasingly demand digital accessibility.


The effective use of alt and title tags is an essential part of a comprehensive SEO strategy. It not only helps to improve the visibility and ranking of a website, but also promotes an inclusive user experience that is fair to all users. When used strategically and thoughtfully, these tags can transform a website – not only improving search engine rankings, but making the internet a more accessible place for everyone.