QT_SCALE_FACTOR=1.5 qbittorrent Caveat: UI elements may clip or overlap.
Open qBittorrent > Tools > Preferences > Behavior. At the bottom, check "Use custom UI Theme" and browse to your style.qss . qbittorrent increase font size
Right-click the desktop > Display settings > Scale. Set to 125% or 150%. qBittorrent will respect this. Caveat: This scales everything—icons, padding, and fonts—which can lead to blurriness on some older versions. QT_SCALE_FACTOR=1
For the uninitiated, qBittorrent is the gold standard of open-source file sharing—lean, feature-rich, and devoid of ads. But for a growing number of users, particularly those with high-resolution (HiDPI) displays, aging eyes, or specific accessibility needs, the default interface presents a silent frustration: text that is simply too small. Right-click the desktop > Display settings > Scale
/* Log and status bars */ QTextEdit, QStatusBar { font-size: 12pt; }
[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.
This is a brute-force method. Effective, but inelegant. The first real control lies in a plain-text file you've probably never opened. On Windows, it's in %APPDATA%\qBittorrent\qBittorrent.conf ; on Linux, ~/.config/qBittorrent/qBittorrent.conf ; on macOS, ~/Library/Application Support/qBittorrent/qBittorrent.conf .