diff --git a/lib/devtools.js b/lib/devtools.js
index 7fcadef..9958b30 100644
--- a/lib/devtools.js
+++ b/lib/devtools.js
@@ -29,8 +29,18 @@ const Devtools = module.exports = function (options) {
   log.silly('devtools: create')
 
   this.options = options || {}
+
+  // the caller make have asked us to set the window size and position
+  const chromeOptions = new chrome.Options()
+  if (this.options.width && this.options.height) {
+      chromeOptions.addArguments([`--window-size=${this.options.width},${this.options.height}`])
+  }
+  if (this.options.windowPosition) {
+      chromeOptions.addArguments([`--window-position=${this.options.windowPosition.left},${this.options.windowPosition.top}`])
+  }
+
   this.service = new chrome.ServiceBuilder(chromedriver.path).build()
-  this.driver = chrome.Driver.createSession(new chrome.Options(), this.service)
+  this.driver = chrome.Driver.createSession(chromeOptions, this.service)
 }
 
 Devtools.prototype.open = function (debuggerUrl, options) {
@@ -68,6 +78,11 @@ Devtools.prototype._resize = function () {
 
   const window = this.driver.manage().window()
 
+  // this may now be done on initialization, above
+  if (this.options.width && this.options.height) {
+    return Promise.resolve(window)
+  }
+
   return window.getSize()
     .then((size) => window.setSize(size.width, 450))
 }