Settings and settings.json

Open it with Ctrl+, or the gear in the top bar. It has General, Appearance, Terminal, Profiles, Notifications, Keyboard, Data, Account and About. Changes apply as you make them.

The runner's settings and a project's run settings are not in this dialog: they are in the This machine sheet and in each project's Settings, kept on this machine only.

%APPDATA%\Splitterm\settings.json

Splitterm reads the file once when it starts and rewrites it whenever you change a setting in the app. Edit it by hand while Splitterm is closed, or the app can overwrite your edit.

The file is checked every time it loads. A value of the wrong type falls back to its default, numbers are clamped into their allowed range, and any key you leave out keeps its default. If the file is not valid JSON at all, Splitterm starts with the defaults, and the next change you make replaces the file.

You only need the keys you want to change:

{
  "font": { "family": "Cascadia Code, Consolas, ui-monospace, monospace", "size": 14 },
  "terminal": { "scrollback": 5000, "cursorStyle": "bar" },
  "claude": { "autoStart": true, "startupCommands": ["claude --continue"] },
  "files": { "autoSave": false },
  "keybindings": { "splitRight": "Alt+Shift+Equal" }
}

font.family, font.size

The terminal font. Size runs from 6 to 72; the default is 13.

editorFont.family, editorFont.size

The font of the Files editor and the Git diff.

terminal.scrollback

Lines kept per terminal, from 0 to 1,000,000. The default is 1000.

terminal.cursorStyle

block, bar or underline.

terminal.tabTitle

What a pane is called while nothing runs in it: profile, the default, shell or cwd.

terminal.shellIntegration

Working-directory and prompt tracking for PowerShell, Git Bash and Command Prompt, as far as each shell allows. On by default.

terminal.copyOnSelect, terminal.rightClickPaste

Clipboard opt-ins. Off by default.

files.autoSave

Save the Files editor's changes by themselves. On by default.

editor.wordWrap

Wrap long lines in the Files editor. Off by default.

defaultProfileId

What + opens. Empty means the OS default shell.

profiles

Your saved profiles.

claude

The Claude profile: baseShellId, autoStart, startupCommands, restoreCommands and startingDirectory.

restoreSession, restorePathOnly

Reopen the last layout on launch, and whether to skip the startup commands when you do.

keybindings

One chord per action. See Rebinding.

notifications

Which agent events raise a desktop notification.

On Pro, Settings > Data can sync your appearance, fonts, terminal settings, keybindings, notifications and profile names across your machines. Commands, folders, layouts and run settings never leave the machine, and neither do the tab shortcuts for now.

Settings > Data can export everything to a JSON file, import one, or reset every setting to its default. An export contains no account or login details. Importing replaces all current settings, and anything the file leaves out returns to its default. Reset cannot be undone.