# Using Vue Devtools in Your Popup

By default, you can't use Vue Devtools on your popup page. The issue has already been discussed in Vue Devtools repository.

The GitHub user @wujunchuan found a solution to make it works anyway.

# Install and Run Vue Devtools

Install Vue Devtools (e.g.: npm i -g @vue/devtools) and then run vue-devtools.

# Configuring Your Extension

A new window opens, copy the first <script> (it should be something like <script src="http://localhost:8098"></script>).

# Updating your .html

Then update your public/browser-extension.html like this:

<!DOCTYPE html>
<html lang="en">
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width,initial-scale=1.0">
  <title><%= htmlWebpackPlugin.options.title %></title>
+  <% if (process.env.NODE_ENV === 'development') { %>
+    <!-- Load Vue Devtools remote ONLY in development -->
+    <script src="http://localhost:8098"></script>
+  <% } %>
  <div id="app"></div>

# Updating Content Security Policy

You also need to update Content Security Policy of your extension. For this, update your vue.config.js and use the option manifestTransformer from vue-cli-plugin-browser-extension's options.

// vue.config.js
module.exports = {
  pages: {
    // ...
  pluginOptions: {
    browserExtension: {
      // ...
      manifestTransformer: (manifest) => {
        if (process.env.NODE_ENV === 'development') {
          manifest.content_security_policy = manifest.content_security_policy.replace('script-src', 'script-src http://localhost:8098');
        return manifest;


  1. If running webpack in watch mode, you need to stop and restart webpack to apply configuration changes.
  2. You should disable and re-enable your extension in Chrome, to take care of manifest.json changes.

# Opening Your Popup

After that, you can inspect your popup and you will see a message like Connected to Vue.js devtools.