livediagram gives you a curated set of eleven typefaces so a diagram can read as crisp, friendly, formal, or hand-drawn without becoming a font free-for-all. You can apply a font to one element or set it as the default for a whole tab, and the two levels work together so you only set what you actually want to override.
The Eleven Fonts
The set spans a deliberate spread of voices:
- Inter: a clean, neutral sans-serif for everyday diagrams.
- Poppins: a geometric sans with a modern feel.
- Nunito: a rounded sans that reads as friendly.
- Oswald: a condensed sans with headline presence.
- Space Grotesk: a grotesque sans with a technical edge.
- Lora: a serif for a more formal, editorial look.
- Abril Fatface: a high-contrast display serif for bold statements.
- Roboto Slab: a slab serif with extra weight and presence.
- Roboto Mono: a monospace, handy for code or technical labels.
- Caveat: a handwriting face for a sketched, informal feel.
- Permanent Marker: a marker-pen face for loud, hand-drawn emphasis.
Both pickers show each name in its own typeface, so you can see the voice before you choose it.
Setting a Font on One Element
Right-click the element (or press the More button on its toolbar, which is the way in on a touch screen), open Text, and expand Font. Click a tile to set that typeface on the element alone; with a mouse, hovering a tile previews it on the canvas first. The Text section only appears once the element has a label, so type something first. Select several elements and the same section sets the font on all of them at once.
Arrows are the exception: an arrow's Caption section covers bold, italic, underline, strikethrough, size and colour, but offers no font picker, so an arrow's caption follows the tab's font.
Setting a Tab Default
To set the typeface for everything on a tab at once, click the paintbrush button in the bottom-right corner of the editor to open the Tab Look & Feel dialog, and switch to its Font tab. (Running Open theme from the command palette opens the same dialog.)
- Tab font sets the default for every text element on the tab that has not chosen its own font. Default clears it, back to livediagram's built-in face.
- Default size for new elements (Scale, Small, Medium or Large) is copied onto each element as you add it, so changing it later never resizes the shapes already on your canvas. A new document starts at Small, and a tab you add takes the font and size of the tab you added it from.
- Apply to all elements pushes the tab's font and size onto everything already on the tab, clearing each element's own font so they all follow the tab again. It is the way to undo per-element font choices in one go.
Every change applies live, and undo covers it like any other edit.
How the Levels Combine
Any piece of text resolves its font in order: an element's own font wins first, then the tab's default, then livediagram's built-in face. (Notes on an event storming board are the one twist: they are written in a marker face unless you give them a font of your own.) Arrows follow the same rules: there is no font picker for them, so they normally use the tab default, but a font applied another way (for example with the format painter) sticks to the arrow like any other override. This means you can set one tab-wide typeface and only override the few labels you want to stand out.
Fonts travel with your work: exports to PNG, SVG and PDF carry the faces you used.
Text stays visible in a fallback face while a font loads, so your diagram is always readable, even offline or where Google Fonts is blocked.
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