Bubble Font Size
You can change text size in Definer in two ways:
- Scale Slider: quick, bubble‑only.
- Theme Editor: precise, global (applies everywhere in extension).
Scale Slider
- Open Definer Options → Bubble.
- Move Font Scale slider between 50% and 200% (100% is default).
- Change applies only to the popup bubble and doesn’t affect the rest of the interface.
Theme Editor
Use this when you want to change font size across the entire extension.
- Open Definer Options → Appearance → Create Theme → Fonts → Size.
- Adjust size and click Save.
- This creates a copy of your current theme with the new font size and applies it throughout Definer (not just the bubble).

Learn more in Theme Editor guide.
Bubble‑only via CSS (Theme Editor)
If you only want to change font size inside bubble via your theme:
- Definer Options → Appearance → Create Theme → CSS
- Add:
#definer-bubble { --font-size: 20px } - Replace 20px with your preferred size (px, em, rem, or %) and click Save.