/* Global base font */ QWidget { font-size: 14pt; font-family: "Inter", "Segoe UI", "Helvetica Neue", sans-serif; } /* Specific dense areas (transfer list) */ QTreeView { font-size: 13pt; }

At first glance, qBittorrent seems stubborn. There is no "Increase Font Size" slider in the main preferences. This absence isn't an oversight but a philosophical choice rooted in its reliance on native Qt frameworks. However, dismissing it as inflexible would be a mistake. Under the hood, qBittorrent offers four distinct layers of typographic control, ranging from the dead-simple to the surgically precise. Before hacking config files, understand that qBittorrent is a Qt-based application. It inherits its default scaling behavior from the OS environment variable QT_SCALE_FACTOR .

The interface redraws. For the first time, the tracker status, file names, and ratio columns are truly legible.

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.

/* Log and status bars */ QTextEdit, QStatusBar { font-size: 12pt; }

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.

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 .

Open qBittorrent > Tools > Preferences > Behavior. At the bottom, check "Use custom UI Theme" and browse to your style.qss .

Save a file named style.qss anywhere. Inside, write:

Launch via terminal with an environmental variable:

[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.

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.

Shut down qBittorrent completely. Open the file. Look for a section labeled [LegalNotice] or simply add this at the bottom:

Use native Retina scaling. The app is generally crisp, but text remains small relative to native Mac apps.

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Increase Font Size | Qbittorrent