This is the easiest platform. If your desktop environment (like GNOME or KDE) is set to a dark GTK theme, FileZilla should follow suit automatically.
For more control, you can use a local stylesheet:
Tree structures for local and remote sites are easier to trace when the connecting lines have high contrast against a muted background. 3. Seamless Integration with Modern Ecosystems filezilla dark theme better
Why Filezilla’s Dark Theme is Better for Developers and Power Users
The benefits of switching to a dark theme in FileZilla are numerous: This is the easiest platform
One-sentence summary
Many users find the "High Contrast" method visually jarring because it changes everything (borders, buttons, scrollbars) in a way that feels very "Windows 98." Apps like WinDark apply a modern "True Dark" (dark grey/black) aesthetic that matches modern apps like VS Code or Discord, making FileZilla look integrated into your system. filezilla dark theme better
While FileZilla remains a robust and reliable FTP client, its relationship with dark mode is complicated. The application's technical dependency on the wxWidgets framework means a simple built-in toggle is not currently feasible.