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The actual alt text for the displayed image will be one of the following, in order of preference: The explicitly requested Alt, if any; The explicitly requested Caption, if the image type has no visible caption; The empty string, if there is an explicitly requested Caption and the image type has a visible caption.
An example of alt attribute text being displayed in place of an unavailable image, with the underlying HTML displayed below it The Wikipedia article for Wolf on the Lynx web browser, displaying the text of the alt attribute in orange in place of the images. The text in the alt attribute is used to replace the image when the image cannot be ...
The alt text for an imagemap region is always the same as its title text; the alt text for the overall image is given in the first line of the imagemap's markup. The underlying image's native dimensions are 3916×1980, and the coordinates are given in these dimensions rather than in the 300px resizing.
The base image has alt text "1896 Democratic campaign poster". The left circle has alt text "William J. Bryan". The right circle has alt text "Arthur Sewall". The blue (i) has alt text "About this image". All these are repeated as link title text, which provides a tooltip in some browsers, with the exception of the base image, which has link ...
The thumb tag automatically allows the image to be enlarged and positions it (floats) automatically to the right of the page. An enlarge icon is placed in the lower right corner. See note below about adding an alt tag; This is the basic markup for most images
The alt text for an imagemap region is always the same as its title text; the alt text for the overall image is given in the first line of the imagemap's markup. The underlying image's native dimensions are 3916 × 1980, and the coordinates are given in these dimensions rather than in the 300px resizing.
For images that link to their description page (most images on Wikipedia), the alt parameter should not be blank, nor should the alt parameter be absent. A screen reader will default to reading out the image filename when no alt text is available. [5] [6] The alt attribute can only contain plain text (no HTML or wiki markup such as wikilinks ...
Markdown [9] is a lightweight markup language for creating formatted text using a plain-text editor. John Gruber created Markdown in 2004 as an easy-to-read markup language. [9] Markdown is widely used for blogging and instant messaging, and also used elsewhere in online forums, collaborative software, documentation pages, and readme files.