# Unable to use Piwik's 'Site Inspector' on our site

**URL:** <https://community.piwik.pro/t/unable-to-use-piwiks-site-inspector-on-our-site/5267>\
**Category:** Data collection and tags\
**Created:** [July 16, 2025, 9:59am UTC](https://community.piwik.pro/t/unable-to-use-piwiks-site-inspector-on-our-site/5267 "2025-07-16T09:59:56Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![B\_Shimm](https://dub1.discourse-cdn.com/flex005/user_avatar/community.piwik.pro/b_shimm/32/3068_2.png) [@B\_Shimm](https://community.piwik.pro/u/B_Shimm)\
**Post date:** [July 16, 2025, 9:59am UTC](https://community.piwik.pro/t/unable-to-use-piwiks-site-inspector-on-our-site/5267/1 "2025-07-16T09:59:56Z")

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Hi,

We have an issue where we’re trying to use the Piwik Site Inspector tool to look at some heatmaps we’re setting up but we’re getting an issue when trying to authenticate.

When firing up the inspector, it seems to try to redirect in the iFrame to /site-inspector/ which doesn’t exist on our site and throws a 404 error.

I’m assuming it’s meant to redirect to our Piwik container to authenticate but that’s not happening.

For relevance, we run a Meta site setup and the Piwik tag container is installed via some server side setup via our CMS, not via the dedicated Piwik Pro tag in Tag Manager (if that has some bearing on it?).

Website: [Industrial Printers, Coders and Markers | Domino Printing](https://www.domino-printing.com/en/home.aspx)  
Piwik Container: [https://domino-printing.piwik.pro/](https://domino-printing.piwik.pro/)

Thanks in advance 🙂

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**Author:** ![jfidala](https://dub1.discourse-cdn.com/flex005/user_avatar/community.piwik.pro/jfidala/32/4263_2.png) [@jfidala](https://community.piwik.pro/u/jfidala)\
**Post date:** [July 16, 2025, 1:40pm UTC](https://community.piwik.pro/t/unable-to-use-piwiks-site-inspector-on-our-site/5267/2 "2025-07-16T13:40:21Z")

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Hello @B_Shimm

There should be possible way to fix it, but we do not take responsibility for any custom code. There is a script that points site inspector to read correct instance:

```auto
<script id="ppas_container_configuration" data-appid="6704945d-98ce-4462-85cc-d3d886e8cdb8" data-host="www.domino-printing.com"></script>

```

You would have to either manually change **data-host** to your Piwik PRO instance container domain `domino-printing.piwik.pro` with browser inspector - or do it with some custom html tag that switches `data-host` attribute for this script on page load.

Let me know if it worked for you.

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<div class="post-metadata">

**Author:** ![B\_Shimm](https://dub1.discourse-cdn.com/flex005/user_avatar/community.piwik.pro/b_shimm/32/3068_2.png) [@B\_Shimm](https://community.piwik.pro/u/B_Shimm)\
**Post date:** [July 16, 2025, 3:19pm UTC](https://community.piwik.pro/t/unable-to-use-piwiks-site-inspector-on-our-site/5267/3 "2025-07-16T15:19:53Z")

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Hi @jfidala

Thanks for that workaround - a little script added via a tag to modify that ‘data-host’ value on Page Load and all works as expected - appreciate the solution! 🙂

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**Author:** ![system](https://europe1.discourse-cdn.com/flex005/uploads/piwikpro/original/1X/db7013c4fd6a24443b339309db52f14995207737.png) [@system](https://community.piwik.pro/u/system)\
**Post date:** [July 18, 2025, 3:21pm UTC](https://community.piwik.pro/t/unable-to-use-piwiks-site-inspector-on-our-site/5267/4 "2025-07-18T15:21:30Z")

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