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Office for Mac Issues

How to Make a Custom Word Theme Appear in Word for Mac

Chanuka GeekiyanageChanuka Geekiyanage Oct 10, 2026 870 views

Question details

The user needs to make a custom Word theme permanently available in the Themes gallery on Mac.

How to Make a Custom Word Theme Appear in Word for Mac
Product
Microsoft Word
Device & OS
Mac
Scenario
Applying and saving a custom .thmx theme file so it is permanently accessible in the application's gallery.
Observed behavior
Opening a custom Word theme applies its styles to the document, but it does not automatically add the theme to the Themes or Theme Colors galleries.
Before you start

Ensure you have the custom theme file (.thmx) downloaded or saved on your Mac in an accessible location, such as your Downloads or Documents folder.

Solution 1Recommended

Save the Theme Directly in Word for Mac

The easiest way to add a custom theme to your gallery is by applying it and then using the 'Save Current Theme' feature from within Word.

1
Open the theme file

Double-click your .thmx file to open it in Word for Mac, which will apply the custom styles to the current document.

2
Access the Themes menu

Navigate to the 'Design' tab on the ribbon and click on the 'Themes' button to open the drop-down menu.

3
Save the theme

Select 'Save Current Theme' from the menu. This will automatically save it to the correct folder and make it permanently available in your Themes gallery.

Save the Theme Directly in Word for Mac
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Frequently Asked Questions

Where are Microsoft Office themes stored on a Mac?

On a Mac, custom Microsoft Office themes are stored in the user library under the specific path: ~/Library/Group Containers/UBF8T346G9.Office/User Content/Themes. You may need to replace the tilde (~) with your actual user directory path.

Why isn't my custom .thmx file showing up in the Themes gallery?

Simply opening a .thmx file will apply the theme to the current document but will not install it into the gallery permanently. To make it appear, you must explicitly use the 'Save Current Theme' option in the Design tab, or manually move the file into the Office Themes folder.

Can I share my custom Word theme with other Mac users?

Yes, you can share the .thmx file with other users. However, they will also need to open the file and save it to their own Themes gallery, or place it in their respective User Content/Themes folder to use it across their documents.