What is the purpose of the alt attribute on images?

Instruction: Explain the importance of the alt attribute and how it affects web accessibility.

Context: This question evaluates the candidate's awareness of web accessibility principles and their ability to implement accessible web features.

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alt is an attribute of img, not an <alt> element. Its value provides a text alternative for the image's purpose in this context.

<img src="ramp.jpg" alt="Step-free entrance on the east side"> <img src="divider.svg" alt=""> <a href="/search"><img src="search.svg" alt="Search the catalog"></a>...

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