Add icon to st.dialog

[alex-bork]

Checklist

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Summary

Hi :-),

I think it would be nice to have the possibility to attach an icon to a st.dialog in the front of the dialog title ... just an idea, nothing urgent.

Best Regards

Why?

No response

How?

No response

Additional Context

No response

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[lukasmasuch]

@alex-bork Thanks for the suggestion :) I agree that this seems like a good idea. In the meantime, as a workaround you can use markdown as part of the title, which allows you to use material icons within the title:

@st.dialog(":material/chart_data: Chart Explorer")

[KaranPradhan266]

Hi! @lukasmasuch I’d love to contribute to this feature. I was thinking to implement dialog icon support using a simple string + image approach (emoji, URL, or local image path). That’s the model I have in mind, but please let me know if you'd prefer a different direction.

[lukasmasuch]

@KaranPradhan266 I think we only want to keep this consistent with other icon parameters, which only support material icons and emojis:

This is using the shared DynamicIcon.tsx component.

[KaranPradhan266]

@lukasmasuch Understood. I’ll begin working on this now.

[KaranPradhan266]

@lukasmasuch @alex-bork Let me know if this looks good to you?

Screen.Recording.2025-12-06.at.1.11.48.PM.mov

[alex-bork]

@lukasmasuch @alex-bork Let me know if this looks good to you?

Screen.Recording.2025-12-06.at.1.11.48.PM.mov

Yes, looks great! :-)
Best Regards

[mayagbarnes]

Closing as implemented in PR #13244 🎉