2017 - News - University of Derby

January start - Study - University of Derby

Courses - Undergraduate - University of Derby

Data governance - About us - University of Derby

Fees and finance - Study - University of Derby

Careers at the University of Derby - www.derby.ac.uk - University of Derby

University of Derby Magazine - Press - University of Derby

Short courses and CPD - Study - University of Derby

Civic news - Civic hub - University of Derby

Our staff - Organisation - University of Derby

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

August 2025

July 2025

University of Derby

Title / URL	Issues
2017 - News - University of Derbywww.derby.ac.uk/news/2017/	8
January start - Study - University of Derbywww.derby.ac.uk/study/january-start/	8
Courses - Undergraduate - University of Derbywww.derby.ac.uk/undergraduate/courses/	8
Data governance - About us - University of Derbywww.derby.ac.uk/about/data-governance/	8
Fees and finance - Study - University of Derbywww.derby.ac.uk/study/fees-finance/	8
Careers at the University of Derby - www.derby.ac.uk - University of Derbywww.derby.ac.uk/jobs/	8
University of Derby Magazine - Press - University of Derbywww.derby.ac.uk/magazine/	8
Short courses and CPD - Study - University of Derbywww.derby.ac.uk/short-courses-cpd/	8
Civic news - Civic hub - University of Derbywww.derby.ac.uk/civic/civic-news/	8
Our staff - Organisation - University of Derbywww.derby.ac.uk/staff/	8

Fix duplicate IDs

University of Derby

Where this issue has occurred