diff --git a/lib/launcher/flags/flags.go b/lib/launcher/flags/flags.go
index f21605da..2b8b2994 100644
--- a/lib/launcher/flags/flags.go
+++ b/lib/launcher/flags/flags.go
@@ -27,6 +27,12 @@ const (
 	// ProxyServer flag.
 	ProxyServer Flag = "proxy-server"
 
+	// WindowSize flag.
+	WindowSize Flag = "window-size"
+
+	// WindowPosition flag.
+	WindowPosition Flag = "window-position"
+
 	// WorkingDir flag.
 	WorkingDir Flag = "rod-working-dir"
 
diff --git a/lib/launcher/launcher.go b/lib/launcher/launcher.go
index 92436c84..4926b376 100644
--- a/lib/launcher/launcher.go
+++ b/lib/launcher/launcher.go
@@ -337,6 +337,16 @@ func (l *Launcher) Proxy(host string) *Launcher {
 	return l.Set(flags.ProxyServer, host)
 }
 
+// WindowSize for the browser.
+func (l *Launcher) WindowSize(x, y int) *Launcher {
+	return l.Set(flags.WindowSize, fmt.Sprintf("%d,%d", x, y))
+}
+
+// WindowPosition for the browser.
+func (l *Launcher) WindowPosition(x, y int) *Launcher {
+	return l.Set(flags.WindowPosition, fmt.Sprintf("%d,%d", x, y))
+}
+
 // WorkingDir to launch the browser process.
 func (l *Launcher) WorkingDir(path string) *Launcher {
 	return l.Set(flags.WorkingDir, path)