diff --git a/gluon.d.ts b/gluon.d.ts
index 63614a6..4f67c21 100644
--- a/gluon.d.ts
+++ b/gluon.d.ts
@@ -533,7 +533,13 @@ type OpenOptions = {
    * Set to blank (`''`) to use no CSP, or provide your own to use (as a string).
    * @default "upgrade-insecure-requests; default-src 'self' 'unsafe-inline'; connect-src https: data: blob: 'unsafe-inline'; prefetch-src https: data: blob: 'unsafe-inline'; font-src https: data: blob: 'unsafe-inline'; img-src https: data: blob: 'unsafe-inline'; media-src https: data: blob: 'unsafe-inline'; style-src https: data: blob: 'unsafe-inline'; form-action https: data: blob: 'unsafe-inline'"
    */
-  localCSP?: string
+  localCSP?: string,
+
+  /**
+   * Whether DevTools (Ctrl+Shift+I etc) is enabled/disabled in the Gluon window. Enabled by default.
+   * @default true
+   */
+  devtools?: boolean
 };
 
 /**
diff --git a/src/index.js b/src/index.js
index 76122e6..5510791 100644
--- a/src/index.js
+++ b/src/index.js
@@ -194,7 +194,7 @@ const defaultCSP = [ 'upgrade-insecure-requests' ].concat(
   [ 'connect-src', 'prefetch-src', 'font-src', 'img-src', 'media-src', 'style-src', 'form-action' ].map(x => `${x} ${csp_allowAll}`)
 ).join('; ');
 
-const startBrowser = async (url, parentDir, { allowHTTP = false, allowNavigation = 'same-origin', windowSize, forceBrowser, forceEngine, localCSP = defaultCSP }) => {
+const startBrowser = async (url, parentDir, { allowHTTP = false, allowNavigation = 'same-origin', windowSize, forceBrowser, forceEngine, localCSP = defaultCSP, devtools }) => {
   const [ browserPath, browserName ] = await findBrowserPath(forceBrowser, forceEngine);
   const browserFriendlyName = getFriendlyName(browserName);
 
@@ -220,7 +220,8 @@ const startBrowser = async (url, parentDir, { allowHTTP = false, allowNavigation
     url: openingLocal ? localUrl : url,
     windowSize,
     allowHTTP,
-    extensions: ExtensionsAPI._extensions[browserType]
+    extensions: ExtensionsAPI._extensions[browserType],
+    devtools: devtools === false ? process.argv.includes('--enable-devtools') : true
   }, {
     browserName: browserFriendlyName,
     url: openingLocal ? localUrl : url,