Where is Customize Fonts in PowerPoint for Mac?

It doesn't exist — PowerPoint for Mac never got the Customize Fonts dialog that Windows has. PowerPoint Matters writes the same theme fonts XML that dialog produces, so Mac gets the same result. (Mac can customize theme colors natively; building fonts and colors together here is just easier.)

Where does PowerPoint store custom theme fonts on a Mac?

In ~/Library/Group Containers/UBF8T346G9.Office/User Content/Themes/Theme Fonts/ — the folder is inside the hidden ~/Library, so in Finder use Go ▸ Go to Folder (⇧⌘G) and paste the path. Drop a theme fonts XML (fontScheme) file there and it appears under Design ▸ Fonts and in the Slide Master view. Theme colors live in the sibling Theme Colors folder.

How do I add a custom theme font set to PowerPoint?

Generate a fontScheme XML naming your heading (major) and body (minor) typefaces, save it into the Theme Fonts folder, then choose it under Design ▸ Fonts or while editing the Slide Master. PowerPoint Matters writes the XML for you.

Do I need a plugin, add-in, or account?

No. The output is standard OOXML that PowerPoint reads natively. No add-in, sign-in, or macro is required, and nothing is uploaded — the tool runs entirely in your browser.

Can I change the twelve theme colors without editing the slide master?

Yes. A clrScheme XML defines all twelve theme colors (dk1, lt1, dk2, lt2, accent1-6, hyperlink, followed hyperlink). Save it to the Theme Colors folder and select it under Design ▸ Colors or in the Slide Master view.

Why can't the preview show some fonts, like Calibri?

The in-browser preview can only render fonts the browser can reach, which is narrower than PowerPoint. “Not previewable” does not mean broken — PowerPoint may still have the font. In Chrome, “Load my installed fonts” widens the preview.

Does it work on Windows?

The XML it generates is standard OOXML and valid on Windows, but the install folder differs. PowerPoint Matters documents the macOS path.

Can I just write the PowerPoint theme XML myself?

Yes. A theme fonts (fontScheme) or theme colors (clrScheme) file is plain OOXML text, so you can hand-write it in any text editor such as TextEdit. It is tedious and error-prone — one malformed tag or wrong attribute silently breaks the theme. PowerPoint Matters writes valid XML in the correct order so it just works.

PowerPoint Matters — Custom Theme Fonts & Colors for Mac

Bring in a mess, leave with order.Drop theme fonts or colors (.xml) to load

✎ every line is editable lt1

dk2Heading:

dk1Body:

hl1–2 hyperlink followed hyperlink

nameTheme:

These twelve colors drive the preview and export as their own Theme Colors file.

Palette

Download & install

Download both files below.
Drop each file into its folder: copy a path below, then in Finder hit ⇧⌘G (Go → Go to Folder), paste, and drop the .xml in.
Pick your set — under Design → Fonts / Colors, or right in the Slide Master view — no restart needed. Your fonts also appear at the top of the Home font menu under Theme Fonts. (Restart PowerPoint only if you’ve just installed new fonts on your Mac.)

Theme fonts

~/Library/Group Containers/UBF8T346G9.Office/User Content/Themes/Theme Fonts/

Theme colors

~/Library/Group Containers/UBF8T346G9.Office/User Content/Themes/Theme Colors/

Everything runs in your browser. Your fonts and colors never leave your Mac.

Theme fonts — fontScheme

Theme colors — clrScheme

Fine print — font names & the preview

Font names. PowerPoint binds a theme font to whatever name the system can resolve to an installed font. The menu groups weights under a typographic family (e.g. “Degular”), but a weight like “Degular Bold” can also bind when the font exposes that name. The top-level family is the most portable — bold is then applied in the master — and a weight-suffixed name may not survive on a machine with a different install.

The preview. It draws only fonts your browser can reach, which is narrower than what PowerPoint can use — Calibri, for instance, ships with Office but isn’t exposed to web rendering on a Mac. “Not previewable” doesn’t mean broken; PowerPoint may still have it. In Chrome, “Load my installed fonts” widens what shows here.

Doing it by hand. It’s all standard OOXML, so yes — you could open TextEdit and type the theme XML yourself. It’s also a pain in the butt, and one stray character breaks the theme. This just writes it clean, the way PowerPoint expects.

Colors. PowerPoint for Mac can build custom color themes natively — fonts it can’t. Doing both here, side by side with a live preview, is just easier.

On Windows. Same XML — it’s what PowerPoint’s own Customize Fonts and Customize Colors dialogs write — so the files work there too; only the install folder differs.

Sharing decks. These files only install the set on your machine, so it shows up in PowerPoint’s pickers. Once applied, fonts and colors travel inside the deck or template — recipients need nothing.

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