Exercise 3: Why Alt Text Is More Than Optional Metadata — Possible Solution ==================================================================== WHAT ALT TEXT ACTUALLY DOES, PER THIS CHAPTER ------------------------------ Per this chapter, alt text is "a written description attached to each image, read aloud by screen readers and shown if an image fails to load." It has two genuinely functional purposes, not just a decorative or administrative one: it gives a text-based description of an image's content for tools that can't display the image visually, and it acts as a fallback if the image itself fails to load for any technical reason. WHO IS SPECIFICALLY AFFECTED IF IT'S LEFT BLANK ------------------------------ Per this chapter's own tip-box, "a visually impaired visitor using a screen reader relies entirely on alt text to know what an image actually shows." A screen reader is software that converts on-screen content to speech (or braille) for someone who cannot see the screen - without alt text, when the screen reader reaches an image, it has nothing meaningful to read aloud, meaning that visitor loses all of the information the image was meant to convey. Anyone relying on assistive technology to browse the web is directly and concretely affected by a missing alt attribute, not just theoretically inconvenienced. WHY THIS CHAPTER CALLS THIS MORE THAN "OPTIONAL METADATA" ------------------------------ Per this chapter, "skipping it isn't a minor shortcut, it's the difference between an image being genuinely accessible and effectively invisible to part of your audience." Framing alt text as merely optional metadata implies leaving it blank has no real consequence - but for a specific, real group of visitors, a blank alt attribute means the image might as well not exist on the page at all, which is a genuine, functional failure of the content to reach its full audience, not a cosmetic omission. WHY THIS MATTERS BEYOND JUST BEING "NICE TO DO" ------------------------------ Treating alt text as core content-authoring practice, rather than an afterthought, ensures a site's actual content - not just its visual presentation - reaches every visitor, regardless of how they're accessing the page. WHY THIS WORKS AS AN ANSWER ------------------------------ It explains precisely what alt text technically does, identifies the specific group of visitors this chapter names as directly affected by its absence, and explains why this chapter frames it as a genuine accessibility failure rather than a minor omission, using the chapter's own explicit wording throughout.