Supporting Parents, Carers and Families | BookTrust

Great Books Guide | BookTrust

Challenge Events | BookTrust

All programmes | BookTrust

The benefits of reading | BookTrust

Our book recommendations | BookTrust

BookTrust | Getting children reading

Bookfinder | BookTrust

Supporting Health Professionals | BookTrust

Become a BookTrust Friend | 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

February 2026

January 2026

Book Trust

	Title / URL	Issues
	Supporting Parents, Carers and Families \| BookTrustwww.booktrust.org.uk/how-we-help/parents-families/	2
	Great Books Guide \| BookTrustwww.booktrust.org.uk/book-recommendations/great-books-guide/	2
	Challenge Events \| BookTrustwww.booktrust.org.uk/support-us/donate-or-fundraise-for-us/challenge-events/	2
	All programmes \| BookTrustwww.booktrust.org.uk/how-we-help/programmes/	2
	The benefits of reading \| BookTrustwww.booktrust.org.uk/resources/reading-benefits/	2
	Our book recommendations \| BookTrustwww.booktrust.org.uk/book-recommendations/booklists/	2
	BookTrust \| Getting children readingwww.booktrust.org.uk/	2
	Bookfinder \| BookTrustwww.booktrust.org.uk/book-recommendations/bookfinder/	2
	Supporting Health Professionals \| BookTrustwww.booktrust.org.uk/how-we-help/health-professionals/	2
	Become a BookTrust Friend \| BookTrustwww.booktrust.org.uk/support-us/become-a-friend/	2

Fix duplicate IDs

Book Trust

Where this issue has occurred