# Alt text: what it is and how it works · Zorraquino
> Alt text describes the function or relevant content of an image when it cannot be seen.
URL: https://www.zorraquino.com/en/dictionary/internet/alt-attribute.html

# Alt text

Alt text describes the function or relevant content of an image when it cannot be seen

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

It helps people who use screen readers and adds context to the content. It should be written according to how the image is used. A purely decorative image usually needs an empty alternative, while an informative chart may require an additional explanation.

Also known as

Alt attribute

Topics

[SEO, content and GEO](https://www.zorraquino.com/en/dictionary/category/seo-contenidos-y-geo)

## Related concepts

- [Duplicate content](https://www.zorraquino.com/en/dictionary/internet/duplicated-content.html)
- [Evergreen content](https://www.zorraquino.com/en/dictionary/digital-marketing/evergreen.html)
- [Anchor text](https://www.zorraquino.com/en/dictionary/internet/anchor-text.html)