Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowJuly 28 - August 9 | Final Round of the Power BI Dataviz World Championships. This is your chance. Learn more
Hello!
I'm currently working my way through the exciting adventure of theming a PowerBi file via json. My current roadblock is the apparent lack of documentation on the parameters inside the actionButton visual.
the post by tmckenzie here: https://community.powerbi.com/t5/Developer/actionButton-Power-BI-JSON-Theme/m-p/694679/highlight/tru... was very helpful in getting me started with the fill attributes, but I haven't found anything equivalent for setting the fontColor or fontSize of the Button Text. Would anyone have any more leads on where I should look to figure this out?
This cheatsheet is pretty handy: https://curbal.com/blog/power-bi-template-to-create-report-themes-with-the-json-template
This resource post is also pretty great: https://community.powerbi.com/t5/Desktop/Report-Theme-File-Advanced-JSON-Commands-Parameters/m-p/765...
Thank you for any assistance.
Please refer to the demo below:
https://microsoft.github.io/PowerBI-JavaScript/demo/v2-demo/index.html#
Community Support Team _ Jimmy Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Thank you for this @v-yuta-msft .
This definitely looks interesting. I haven't figured out a way to find out what json paremeters there are in an action button yet, but I'll keep playing with it.
I looked at a few other items and when I run "Get Visual Capabilities", the json that's returned doesn't seem to be as complete a listing as I've seen elsewhere in the links mentioned previously. Is this the right function to determine what's available to theme in a theme.json file?
Thanks,
~Israel
Join us in Barcelona for FabCon and SQLCon, the Fabric, Power BI, SQL, and AI community event. Save €200 with code FABCMTY200.
If you love stickers, then you will definitely want to check out our community sticker challenge, Barcelona edition!
Check out the July 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 2 | |
| 2 | |
| 1 | |
| 1 | |
| 1 |
| User | Count |
|---|---|
| 4 | |
| 3 | |
| 2 | |
| 2 | |
| 1 |