The purpose is to specify a textual replacement for the image, to be displayed or otherwise used in place of the image. There are speed issues at the user’s side and the image is too heavy to be loaded. If the images are for part of the design of the site, they should still have the ALT but they can be left empty so the url doesn't have to be read for every part of the site. The alt attribute is used by "screen reader" software so that a person who is listening to the content of a webpage (for instance, a person who is blind) can interact with this element. The ALT attribute is for the visually impaired user that would use a screen reader. There may be a few reasons that images does not load, for example: The specified path in img src tag is not correct. The DevGuru XHTML Quick Reference is the definitive XHTML reference and tutorial resource on the web, with hundreds … Under that paradigm, it was common to include sizing information along with the markup using the width and height attributes. The alt attribute is the HTML attribute used in HTML and XHTML documents to specify alternative text (alt text) that is to be rendered when the element to which it is applied cannot be rendered.. XHTML » Tags » img Syntax: The img tag is used to insert a graphic or photographic image directly into the flow of text and other images. And more. What if the image does not load? Note: For elements, the alt attribute can only be used with . A common questions is how to align an image to the center of a section. Applies to A floated image affects all the elements that follow it, unless a br element with the clear attribute is used. Before CSS became the standard way to control web page layout, it was common to include inline styling information. Use the HTML src attribute to define the URL of the image; Use the HTML alt attribute to define an alternate text for an image, if it cannot be displayed; Use the HTML width and height attributes or the CSS width and height properties to define the size of the image; Use the CSS float property to let the image float to the left or to the right alt texts in img elements In HTML authoring, there are very good reasons to include an alt attribute into every img element. One simple way to find out whether a particular image format is supported on a wireless device is to check the accept HTTP header, like what we have done in the "Choosing MIME Types Dynamically" section of this XHTML MP tutorial. Firefox, Chrome, and other browsers (except Internet Explorer) follow the W3C standards for HTML, which states that an image … This attribute specifies the information about the image like image name, image link, image author, image specification, etc. How not to use the height attribute. 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