The benefits of reading | BookTrust

BookTrust

Cookies | BookTrust

Storytelling tips | BookTrust

Mental health and wellbeing and books | BookTrust

All programmes | BookTrust

Our organisation | BookTrust

Leave a gift in your will | BookTrust

Become a BookTrust Friend today | BookTrust

What we do | BookTrust

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

Book Trust

	Title / URL	Issues
	The benefits of reading \| BookTrustwww.booktrust.org.uk/resources/reading-benefits/	2
	BookTrustwww.booktrust.org.uk/invented-url-for-404-page	2
	Cookies \| BookTrustwww.booktrust.org.uk/cookies/	2
	Storytelling tips \| BookTrustwww.booktrust.org.uk/resources/storytelling-tips/	2
	Mental health and wellbeing and books \| BookTrustwww.booktrust.org.uk/resources/mental-health/	2
	All programmes \| BookTrustwww.booktrust.org.uk/how-we-help/programmes/	2
	Our organisation \| BookTrustwww.booktrust.org.uk/about-us/our-organisation/	2
	Leave a gift in your will \| BookTrustwww.booktrust.org.uk/support-us/legacy-donations/	2
	Become a BookTrust Friend today \| BookTrustwww.booktrust.org.uk/support-us/become-a-friend/	2
	What we do \| BookTrustwww.booktrust.org.uk/about-us/what-we-do/	2

Fix duplicate IDs

Book Trust

Where this issue has occurred