Web Design and Development
The alt attribute in HTML is one of the most improperly used HTML code elements. Either webmasters completely neglect to use it or simply use it in a way in which it was not intended. But by using it properly, you can take advantage of SEO benefits and achieve greater accessibility.
The ALT attribute is used to specify alternative text.The HTML Specification from W3C states:
The alt attribute specifies alternate text that is rendered when the image cannot be displayed. User agents must render alternate text when they cannot support images, they cannot support a certain image type or when they are configured not to display images.
So in short, ALT text is used when images cannot be displayed or loaded. For example, this situation might occur if users opt to use a text-only browser, are on a slow internet connection, or if the web server is unable to serve images.
Below, we’ve listed a few cases you’ll encounter and how to use the ALT attribute.
In addition, there are two guidelines that should be followed. First, alt text should be kept to under 50 characters. And second, you should avoid using specialized symbols. If you need to include a symbol, consider a textual alternative.
Once you get familiar writing alt attributes, you will find that they are very easy to use and make the page very accessible for all users. Additionally, they have great search engine optimization benefits. Images, for example, cannot be read and interpreted by search engines. But alt text can. And finally, alt text is required by the W3C specification for valid html.Tags: html validator, image optimization, organic search, search engines