I am working on a custom theme and am a little confused regarding how I can access/edit what’s in the ``. I see the file `head_tag.html`, and of course when you edit it, it overrides the existing template. Cool, but how do I find the existing content? I’ve read and re-read this: [Developing Discourse Themes & Theme Components](https://meta.discourse.org/t/developer-s-guide-to-discourse-themes/93648) and also looked through [https://github.com/discourse/discourse/tree/master/app/assets/javascripts/discourse/templates](https://github.com/discourse/discourse/tree/master/app/assets/javascripts/discourse/templates)
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While you can add to it - like you’ve already discovered - you can’t modify the existing contents of the `` tag in a theme because it’s generated based on `.erb` files and themes don’t have access to that.
[discourse/app/views/layouts/application.html.erb at eae22548de4eedad875555e7353b8abfdce2452b · discourse/discourse · GitHub](https://github.com/discourse/discourse/blob/eae22548de4eedad875555e7353b8abfdce2452b/app/views/layouts/application.html.erb#L3-L64)
with a another file that’s loaded as a partial here
[discourse/app/views/layouts/\_head.html.erb at eae22548de4eedad875555e7353b8abfdce2452b · discourse/discourse · GitHub](https://github.com/discourse/discourse/blob/eae22548de4eedad875555e7353b8abfdce2452b/app/views/layouts/_head.html.erb)
It’s possible that there maybe JavaScript workarounds to achieve what you’re trying to do. I might be able to advise if you can give me a simple example of the desired changes.
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Hi Joe, the Theme CLI tool creates the `head.html` file. So if it practically can’t be used, I am confused as to it’s purpose?
Initially I wanted to import fonts via a `` tag in the head, but I resolved that with a CSS import instead.
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Thanks for clarifying.
What you want to do is actually possible in a theme. I initially thought you were trying to modify the existing tags in the document `` tag that are added by Discourse.
A theme can add arbitrary tags to the document `` tag without issues. That’s the purpose of the `head_tag.html` file that the Theme CLI generates.
The `head_tag.html` file correlates to the `` tab in the theme editor
Any valid html you add there will be injected in the document `` tag. Notice that I said injected - you don’t override the existing tags, your html just gets added to them. It would be added here (simplified screenshot)
So if you want to add a `` tag for a font like this one for example
```plaintext
```
you would just need to add it to the `head_tag.html` file that the Theme CLI generates and it should show up. (simplified screenshot)
Do note that unlike CSS changes, this requires a page refresh to actually work.
Let me know if you need any clarification.