Online Education | NC State University

Resources | NC State University

Partnerships | NC State University

Contact | NC State University

Liability | NC State University

Campus Life | NC State University

Free Speech

Copyright | NC State University

Raleigh, N.C. | NC State University

First time visit: View without clicking anything

All `id` attributes on a page must be unique, or accessible technologies used by the page 
can stop working.

## Example

The duplicate `id` here makes it unclear which label belongs to which input field:

```html
<label for="name">Your name</label>
<input id="name">

<label for="name">Company name</label>
<input id="name">
```

As a result, accessible technologies like screen readers can fail to read out the 
correct text, or may read out no text at all.

Similar issues can occur when using `aria-labelledby` and `aria-describedby`.

## How to fix

Ensure all `id` attributes on a page are unique. 

## More information

See [Technique H93](https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/H93) 
for more information.

duplicate-id

June 2025

May 2025

North Carolina State University

	Title / URL	Issues
	Online Education \| NC State Universitywww.ncsu.edu/online-education/	4
	Resources \| NC State Universitywww.ncsu.edu/resources/	4
	Partnerships \| NC State Universitywww.ncsu.edu/partnerships/	4
	Contact \| NC State Universitywww.ncsu.edu/contact/	4
	Liability \| NC State Universitywww.ncsu.edu/copyright/liability/	4
	Campus Life \| NC State Universitywww.ncsu.edu/campus-life/	4
	Free Speechwww.ncsu.edu/free-speech/	4
	Copyright \| NC State Universitywww.ncsu.edu/copyright/	4
	Raleigh, N.C. \| NC State Universitywww.ncsu.edu/raleigh/	4
	First time visit: View without clicking anythingwww.ncsu.edu/	4

Fix duplicate IDs

North Carolina State University

Where this issue has occurred