Academics | University of Toronto

The Bulletin Brief | University of Toronto

Contact U of T News | University of Toronto

About U of T | University of Toronto

News search | University of Toronto

News | University of Toronto

University life | University of Toronto

Celebrates hub page | University of Toronto

Libraries | University of Toronto

Fall convocation 2023 | University of Toronto

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

University of Toronto

Title / URL	Issues
Academics \| University of Torontowww.utoronto.ca/academics	32
The Bulletin Brief \| University of Torontowww.utoronto.ca/bulletin	32
Contact U of T News \| University of Torontowww.utoronto.ca/news/contact-us	32
About U of T \| University of Torontowww.utoronto.ca/about-u-of-t	32
News search \| University of Torontowww.utoronto.ca/news/searchnews	32
News \| University of Torontowww.utoronto.ca/news	32
University life \| University of Torontowww.utoronto.ca/university-life	32
Celebrates hub page \| University of Torontowww.utoronto.ca/celebrates	32
Libraries \| University of Torontowww.utoronto.ca/libraries	28
Fall convocation 2023 \| University of Torontowww.utoronto.ca/convocation	28

Fix duplicate IDs

University of Toronto

Where this issue has occurred