# Tags (https://talivia.com/docs/tags)



Tags let you mark events coming from a specific script installation or environment.

```html
<script
  defer
  src="https://talivia.com/script.js"
  data-website-id="YOUR_WEBSITE_ID"
  data-tag="marketing-site"
></script>
```

Every event sent by that script includes the tag.

## Common uses [#common-uses]

* Separate marketing and app shells when both use the same website id.
* Mark embedded experiences.
* Compare rollout versions.
* Debug staging traffic without creating a second website.

## Filtering [#filtering]

Tags appear as an event dimension and can be used in filters, breakdowns, and event-level investigation.