> For the complete documentation index, see [llms.txt](https://docs.uxwizz.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.uxwizz.com/useful-examples/tracking-404-pages.md).

# Tracking 404 Pages

{% hint style="info" %}
You can not tell if a page did load or showed 404 just by viewing the visited pages list.

You might want to know if users land on a page that renders your 404 content. 
{% endhint %}

To get better insights, we can:

1. Create a 404 Tag, so we can easily filter those sessions.
2. Create a 404 Event, so we can see which page triggered the 404 error.

Include this JavaScript snippet in your 404 page template.

{% code title="File: 404.html" fullWidth="false" %}

```html
<!-- After the tracker is included -->
<script>
UST.addTag('404-page-not-found');
UST.addEvent({
    category: 'ERROR',
    action: '404_NOT_FOUND',
});
</script>
```

{% endcode %}

The end result will be something like this:

<figure><img src="/files/qpYT32ADBJU6qWJ8e1KG" alt=""><figcaption></figcaption></figure>