> For the complete documentation index, see [llms.txt](https://docs.jentis.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jentis.com/jentis-dcp-elements/versions-and-preview/preview-monitor.md).

# Preview Monitor

With server-side tracking architecture, a configuration preview is key. It makes transparent what is not visible to any third party or website visitor: the communication stream from user to any service provider (tools) made with your JENTIS server. The preview monitor enables you to preview and debug all data streams, be they client—or server-side tags and their streams.

To open the preview monitor, navigate to the "Publish" section that displays all versions.

<figure><img src="/files/dKNQOme9KUYpJpnuSjpX" alt=""><figcaption></figcaption></figure>

In the versions overview, you can click on the “Preview” button to open your website in preview mode with any version (the currently edited or any of your past versions published).

<figure><img src="/files/dV3HKkmkcutDUO4vf2h8" alt=""><figcaption></figcaption></figure>

Now you can see in the preview tab the button to open your website (“Start Debug Session”-button) or copy paste the parameters to open your website manually.

{% hint style="warning" %}
You might need to allow the JENTIS DCP to open a new tab. Some browsers are blocking this action by default.

Please note that you can open the preview with any device or browser; it must not be opened in the same window as the current browser (that displays the data streams received in the preview).
{% endhint %}

The query parameters (`jts_preview`, `jts_debug` and `jts_log`) will instruct the DCP to display more information for debugging.

There are two layers to inspect the information:

* client-side (in the browsers developer tools you can find information in the JS console)
* server-side (here the server to server communication is displayed)

In the inspector window, you will see the incoming State events and the data that was then sent to a tool following a tag configuration.

The following example displays a data stream to a Google Analytics tools pageview-tag. It consists of the payload and HTTP parameters to check if the configuration meets your requirements.

<figure><img src="/files/mSioR6leWZriHxIOpbSt" alt=""><figcaption></figcaption></figure>

There are two ways to present the preview data. The “Data Logs” view will simply log all the data streams as they appear and show the JENTIS system logs. The “State Debugger” view, however, will group all the data streams by the state (event) they executed based on.


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