Accessibility Label

Severity	Serious
Accessibility Principle	Understandable
Affected users	Visual
Success criterion	4.1.2

Accessibility labels improve usability for people relying on assistive technologies, such as screen readers (VoiceOver, TalkBack) and voice control software (like Voice Access). Labels serve as the "name" of an element for both navigation and voice commands, so they should be short, unique, and actionable.

Expectations

Assistive Technology: Screen Reader

• When: The user focuses the component
  • Then: The Screen Reader reads out the label

VoiceOver	Talkback
[the button label], button, double tap to activate	[the button label], button, double tap to activate	Good

---

Assistive Technology: Voice Control

• When: The user pronounces the label
  • Then: The Voice Control software recognizes the label
    • And:
      The Voice Control software executes the action

When to use the Accessibility Label

Set accessibilityLabel on any UI element that:

• Is interactive (buttons, links, toggles, custom touchables)
• Displays important information (e.g., meaningful images)
• Accepts user input (fields, switches, checkboxes)

Purely decorative elements should be hidden from assistive technologies:

accessible={false}
importantForAccessibility="no-hide-descendants" // Android
accessibilityElementsHidden={true} // iOS

Best Practices

Keep labels concise and unique

• Use the shortest label that clearly identifies the element and its action.
• Avoid including the element type ("button"), unless needed for clarity or disambiguation.
• Avoid including "double tap to activate" or similar phrases, as screen readers announce this automatically. (If not then check the Accessibility Role guideline)

Voice Control

Voice control user will use the label to execute actions, so it should be short and unique.

Example:

Provide context only if necessary for disambiguation

If multiple similar elements exist, add only enough context to distinguish them.

Example:

accessibilityLabel="Delete John"
accessibilityLabel="Delete Mary"

If the action's effect isn't obvious, add an accessibilityHint with further explanation.

Example:

accessibilityLabel="Delete John"
accessibilityHint="Removes John from your contacts"

Reflect state of dynamic content

Update labels to reflect the current state (e.g., mute/unmute).

Example:

accessibilityLabel={isMuted ? "Unmute" : "Mute"}

Avoid ALL CAPS Accessibility Label

• Severity: Warning

Screen readers may interpret capital letters as acronyms, misinterpreting content.

Example: ADD TO THE CART

<Pressable accessibilityLabel="ADD TO THE CART">...</Pressable>

This is how the different screen readers handle the uppercase label:

VoiceOver	Talkback
A-D-D to the cart	Add to the cart	Wrong

In this case, VoiceOver does the spelling of the word ADD while talkback reads it correctly. The remaining words are read correctly by both screen readers.

Example: CONTACT US

VoiceOver	Talkback
Contact U.S.	Contact U.S.	Wrong

The word CONTACT is read correctly, but both screen readers spell the word US as it is interpreted as U.S. for United States.

Optimize for voice control

Choose labels that are easy to speak and unambiguous for voice command software. Avoid long phrases that require the user to say a lot; brevity aids efficiency.

Example

❌ Bad:

This label is too long, includes unnecessary information and forces the user to say a lot of words.

aria-label="Cart, you have 2 items in your cart"

✅ Good:

This label is concise, unique, and clearly indicates the action.

aria-label="Cart"
aria-hint="You have 2 items in your cart"

If you need to provide additional context, use the Accessibility Hint prop to explain the action or effect of the element.

VoiceOver	Talkback
Contact us, button, double tap to activate	Contact us, button, double tap to activate	Good

No Accessibility Label

• Severity: Serious

The problem

Let's consider the following example:

How to test

• Turn on the screen reader on your device (VoiceOver for iOS, TalkBack for Android)
• Navigate to the component you want to test
• Ensure the screen reader reads the component in the following order:
  • label
  • role (e.g., "button")
  • action (e.g., "double tap to activate")

Example

<Pressable onPress={contactUs} role="button">
  <Text>Contact us</Text>
</Pressable>

VoiceOver	Talkback
Contact us, button, double tap to activate	Contact us, button, double tap to activate	Good

The label is announced first, then the role and the action that can be performed at the end.

Icon only buttons

• Severity: Critical

<Pressable onPress={goBack} role="button" aria-label="Go back">
<SVGIcon />
</Pressable>

When testing the button with both VoiceOver and TalkBack, they both read:

VoiceOver	Talkback
Go back, button, double tap to activate	Go back, button, double tap to activate	Good

The accessibilityLabel is announced first, then the role and the action that can be performed at the end.

External resources

Some helpful resources about accessibility and all caps.

• http://ux.stackexchange.com/questions/67454/how-does-capitalization-affect-readability