Screen Readers

Definition

Assistive technologies that render text and image content as speech or braille output. They are essential for blind or visually impaired users to navigate the web.

Explain Like I'm New

Software that reads the code of your website out loud. Because the user cannot see the screen, the software jumps through the HTML tags. It relies entirely on your HTML being structured correctly (Headings in order, Images having ALT text, Buttons being actual `<button>` tags).

Real World Example

VoiceOver on Mac/iOS, NVDA or JAWS on Windows.

Common Use Cases

•Testing web accessibility
•Ensuring ADA compliance

Interactive Example

Interview Questions

basic

How do screen reader users quickly navigate a long webpage?

intermediate

What happens if an image is purely decorative, but a screen reader tries to read it?

Flash Cards

Question

How do they navigate?

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Answer

They don't read the whole page top-to-bottom. They use keyboard shortcuts to jump from Heading to Heading (H1 -> H2 -> H3) to scan the page's outline. This is why proper heading structure is critical.

Question

Decorative images?

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Answer

If an image is just a decorative background swoosh, you don't want the screen reader to waste time announcing it. You MUST give it an empty alt tag: `alt=""`. This explicitly tells the screen reader to skip it.