Filezilla Dark Theme Upd Exclusive -

This is the easiest and most native method. If you're using a Linux distro with GNOME, KDE, or XFCE, simply install a system-wide dark GTK theme.

: FileZilla uses the wxWidgets UI framework to maintain identical performance and core code across multiple operating systems. Historically, wxWidgets relied entirely on the host OS to draw menus, trees, and boxes. filezilla dark theme upd

A dedicated setting would allow users to have a light system theme but a dark FileZilla. Best Practices for FileZilla Customization This is the easiest and most native method

High-contrast icons designed specifically for dark backgrounds. Layout Refinements: Improved readability for site manager and transfer logs. Historically, wxWidgets relied entirely on the host OS

If the icons look weird, check the "Themes" section in settings to swap to the new high-contrast pack.

The lack of a native dark mode toggle is a frequent topic of discussion. The root cause lies in FileZilla's older UI framework, , which does not have complete or native support for modern dark modes across all platforms. Rewriting the UI for full dark mode support would be a massive undertaking.

Until v4.0 drops, the methods above are the state-of-the-art. If you cannot wait, consider switching to an alternative FTP client that supports dark mode natively (e.g., with the Dark theme, Cyberduck , or ForkLift ).