Is longdesc supported in HTML5?
HTML 4 provided a longdesc attribute for the img element that enabled a machine-discoverable description of an image to be linked to the image. This extension specification defines a longdesc attribute to provide that functionality for HTML5.
What is a longdesc tag?
Definition and Usage The longdesc attribute specifies a hyperlink to a detailed description of an image.
Is Longdesc deprecated?
The longdesc attribute was never well implemented in the mainstream, and browser support and AT support was inconsistent. It was deprecated in HTML5 but a void existed for a viable replacement and WCAG still required a long description be provided for complex images.
Is Longdesc supported?
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes.
What tag is used to create hyperlinks?
The HTML element (or anchor element), with its href attribute, creates a hyperlink to web pages, files, email addresses, locations in the same page, or anything else a URL can address.
What attribute would you use to describe the content of an image?
What is alt text? Alt text (alternative text), also known as “alt attributes,” “alt descriptions,” or technically incorrectly as “alt tags,” are used within an HTML code to describe the appearance and function of an image on a page.
Which attribute do you use when you want to provide more information about a complicated image?
Complex images, charts or graphs (e.g. images generated from tabular data) must have long descriptions to provide an additional detailed description of the information conveyed by the image. A long description should provide more information and detail than the text alternative for the image (e.g. alt attribute).
What is DESC in HTML?
The element provides an accessible, long-text description of any SVG container element or graphics element. Text in a element is not rendered as part of the graphic. If the element can be described by visible text, it is possible to reference that text with the aria-describedby attribute.
What is marquee tag with syntax?
The HTML tag defines a scrolling text area in the HTML document that moves across the page in a horizontal or vertical direction. By default, text found within the tag will scroll from right to left. It is recommended that you use CSS instead to create a similar scrolling effect.
What is title in HTML?
The HTML element defines the document’s title that is shown in a browser’s title bar or a page’s tab. It only contains text; tags within the element are ignored. Note that leaving off should cause the browser to ignore the rest of the page.
Is the longdesc attribute still available in HTML?
The longdesc attribute was a part of the HTML 4.0 specification. When HTML5 was first published, it was labelled as “obsolete.” Later, it was released as a recommended “HTML Extension.” So it is sort-of deprecated, and sort-of available for use.
When to use longdesc instead of IMG in HTML?
If you want to provide complex alternative text (where “complex” could mean: containing lists, tables, audio/video etc.), you could either use an img element with a longdesc attribute, or an object element instead of img. In HTML 4.01, longdesc is part of the specification.
Which is the best way to use longdesc?
Perhaps the most “complete” option would be to use a hidden, onpage longdesc element and then use JavaScript to allow the user to view it. Many people think this is essentially how browsers should implement the longdesc recommendation, so it seems like a good idea to just go ahead and implement this now.
Can a longdesc resource help a website Seo?
Providing a longdesc resource that describes the content of an image can make you site much more accessible, especially if your content is heavily dependent on images. Some people believe that using longdesc attributes can help with SEO. There is no evidence that this is the case, but it certainly can’t hurt.