Principle 1 – Perceivable

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Conformance Levels

Description

Information and user interface components must be presentable to users in ways they can perceive.

Questions & Answers

If images have captions, do they need alt text?

I have images on my page that include captions. Do I also need to write alternative text for the images?

alt text
captions
images

How do I create a collapsible list?

I have a list of items that can have up to 50 items, and we only want to display the first 3, but have the remaining items in a "...47 more" style link which opens a scrollable popup. What is a good accessible solution?

aria-posinet
aria-setsize
collapsible list
lists

How do I write instructions that don’t rely on sensory characteristics?

In web accessibility, what are sensory characteristics? How do I write instructions that don't rely on sensory characteristics?

sensory characteristics
user experience

Should inputs and buttons have the same focus state?

Should text input text focus state be the same as buttons keyboard focus state?

buttons
color contrast
focus
text input

How do I know whether an image of text is decorative?

Success Criterion 1.4.9: Images of Text (No Exception) states that text “used for pure decoration” is one of the few allowed uses for images of text. How do I know whether text is decorative?

decorative images
images
text

Can I hide content while maintaining web accessibility?

How can I hide content while still maintaining web accessibility?

aria
CSS
hidden content

How do I make my podcast accessible?

How do I make my podcast accessible to people with disabilities?

audio
audio controls

How do I prevent user errors on my website?

errors
forms
labels
user experience

What is ARIA?

What is ARIA? I know it's related to web accessibility, but what does it do?

aria
aria attributes