Examine source code of Browser_Proxy_Plugin

{
  "manifest_version": 2,
  "name": "Browser_Proxy_Plugin",
  "version": "1.0.1",
  "permissions": [
    "proxy",
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "modules/background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox_proxy_plugin@example.com",
      "strict_min_version": "91.1.0"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Browser_Proxy_Plugin"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}