Examine source code of Guidper

{
  "manifest_version": 2,
  "name": "Guidper",
  "description": "Easily create interactive guides and onboarding experiences for your website, without writing a single line of code",
  "version": "1.0.1",
  "icons": {
    "16": "icon/16.png",
    "48": "icon/48.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "editor-host/*.js",
    "editor-host/*.css",
    "editor-host/editor/*.js",
    "editor-host/editor/*.css"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Document",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{14e1ad2f-5f03-42a0-a136-606408030c49}"
    }
  }
}