Imagealtteksti

Imagealtteksti, commonly known as "alt text" or "alternative text," refers to a short description of an image that is used primarily for accessibility and search engine optimization purposes. In web development, alt text is an attribute added to the `<img>` tag in HTML to provide context about the image when it cannot be displayed, such as due to technical issues, slow internet connections, or when a user is visually impaired and relies on screen readers.

The primary purpose of alt text is to enhance accessibility for people with disabilities, particularly those who use screen readers or other assistive technologies. By describing the image in text form, alt text ensures that users can understand the content and context of the image without visual input. For example, if an image depicts a red apple, the alt text might read, "A red apple on a wooden table." This helps users with visual impairments navigate and comprehend web content more effectively.

Beyond accessibility, alt text also plays a role in search engine optimization (SEO). Search engines like Google use alt text to better understand the content of a webpage, which can improve the site's ranking in search results. When an image is relevant to a user's search query, descriptive alt text increases the likelihood that the image will appear in image search results.

Best practices for writing effective alt text include keeping descriptions concise yet descriptive, avoiding unnecessary keywords, and ensuring the text accurately reflects the content of the image. It is also important to avoid generic phrases like "image.jpg" or "photo," as these do not provide meaningful context. Instead, focus on describing what the image shows and its relevance to the surrounding content.