Tmux Config Generator: Build Your .tmux.conf Online

TL;DR — pick your options, copy the generated file to ~/.tmux.conf, and reload with tmux source-file ~/.tmux.conf. Everything runs in your browser; nothing is uploaded.

~/.tmux.conf

Save the file as ~/.tmux.conf and reload with tmux source-file ~/.tmux.conf. Most options apply immediately, but default-terminal only affects windows created afterwards, and after changing focus-events clients should be detached and attached again (see tmux(1)).

What each option does

Option	What it does
Prefix key	The chord before every tmux shortcut. `Ctrl`+`a` is popular with GNU Screen converts and Emacs users, `Ctrl`+`Space` is the common escape for shell users; the cheat sheet shows every shortcut as `Ctrl`+`b`, so keep the default while learning if you follow along with it. Custom values must be tmux key names (`C-a`, `C-Space`, `C-\`); keys the config parser treats specially, such as `C-\` and `C-;`, must be quoted in the file (`set -g prefix 'C-\'`).
Mouse mode	Wheel scrolling, pane clicking, divider dragging. Hold `Option`/`Shift` while selecting to use your terminal's own copy.
24-bit true color	Declares `tmux-256color` and enables `Tc` overrides, so themes render exact colors in modern terminals instead of the nearest 256-color approximation.
Scrollback history	Lines kept per pane; 10000 is comfortable without much memory cost (tmux's own default is 2000). Since tmux 3.7 a changed limit also applies to existing panes; on older releases only panes created afterwards get the new limit, so restart the server to apply it everywhere.
Base index	Windows and panes numbered from 1 so the top-row keys match; also enables automatic renumbering after closes.
Vi copy mode	`mode-keys vi` for `hjkl` movement in copy mode; the generated file also binds `v` to start selecting and `y` to copy-and-exit (stock tmux uses `Space` and `Enter` for that, with `v` as block selection).
Status bar	Position and refresh interval; the interval redraws the whole status line (clock, window flags) and does not touch pane content — 0 disables periodic redraws. Every config sets a session name on the left and a clock on the right.
Pane borders	The style dropdown picks accent colors or heavy 3.2+ border lines (a theme plugin manages border colors when one is active); the toggle shows each pane's index and running command above it, which makes multi-pane layouts self-documenting.
Themes (via TPM)	Ten plugin presets (Dracula, Catppuccin, Tokyo Night, Rose Pine, Kanagawa, Everforest, Gruvbox, Nord, One Dark, Solarized). The generated file ships with the TPM bootstrap: clone TPM once with `git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm`, reload, then press `prefix` + `I` inside tmux to install the theme. Pick None and the TPM block is emitted as comments, so the config runs without any plugin. Tokyo Night needs more than TPM on its own — it expects Nerd Fonts v3+ and bash 4.2+, plus `jq` and `playerctl` if you enable its optional widgets, so an unpatched terminal will show missing glyphs in the status bar. Catppuccin targets tmux 3.2 or newer and draws its own status icons, so it needs a Nerd Font as well. For deeper styling, see Theming & Customizing.