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The alt attribute in HTML is used to specify an alternate text for an image if the image cannot be displayed. This attribute is essential for providing alternative information for an image in cases where users cannot view it due to various reasons such as slow connection, an error in the src attribute, or if the user uses a screen reader1.
Usage and Syntax
The alt attribute is used within the <img> tag to provide a textual description of the image. Here is an example:
<img src="img_girl.jpg" alt="Girl in a jacket" width="500" height="600">In this example, if the image img_girl.jpg cannot be displayed, the text "Girl in a jacket" will be shown instead1.
Guidelines for Writing Alt Text
When writing the alt text, consider the following guidelines:
Images must have alternate text: Element has no title attribute
Sep 27, 2021 · The HTMLImageElement property alt provides fallback (alternate) text to display when the image specified by the element is not loaded. This may be the case because of an …
HTML <img> alt Attribute - W3Schools
Learn how to use the alt attribute to specify an alternate text for an image, if the image cannot be displayed. The alt attribute provides alternative information for an image if a user for some …
Images Tutorial | Web Accessibility Initiative (WAI) | W3C
Feb 8, 2022 · Images must have text alternatives that describe the information or function represented by them. This ensures that images can be used by people with various …
Images must have alternate text
All images must have alternate text to convey their purpose and meaning to screen reader users. The Algorithm (in simple terms) Ensures that every <img> element has alternative text and …
Accessible images: alternative text guidelines | ASU IT Accessibility
On digital content, all images must have alternative text that describes them, except for decorative images, which should have an empty ALT tag. Supplying concise and equivalent alternate text …
WCAG H37: Require images to have alternative text
Both HTML5 and WCAG requires all images to have an alternative text. Assistive technology such as screenreaders relies on the alt-text to provide a description of the image. Purely Decorative …
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There must be a text alternative for the object element in order for screen reader users to understand what the object contains. When creating alternative text, keep in mind that its goal …
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All images must have alternate text to convey their purpose and meaning to screen reader users. Screen readers have no way of translating an image into words that gets read to the user, …
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If an image has (non-empty) alternative text, the image is identified as meaningful, and its alternative text is presented to the user. If an image has an empty alt attribute, the image is …
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