Use native Retina scaling. The app is generally crisp, but text remains small relative to native Mac apps.
Open qBittorrent > Tools > Preferences > Behavior. At the bottom, check "Use custom UI Theme" and browse to your style.qss .
So, open your qBittorrent.conf . Write a stylesheet. Your eyes will thank you. And if you're a developer reading this—consider submitting a patch for a native font picker. It's time.
[Application] UseCustomUITheme=true Then, you must define a stylesheet. But the fontSize key here is largely deprecated in v4.5+. The real power comes from . Layer 3: The Custom Stylesheet (The Power Move) This is where qBittorrent transforms. The application accepts a full Qt StyleSheet (QSS)—a CSS-like language for Qt widgets. You are no longer asking for a font size; you are dictating typography to every single UI element.