Examine source code of TZM.fi RBE Edu

{
  "manifest_version": 2,
  "name": "TZM.fi RBE Edu",
  "version": "1.0.3resigned1",
  "description": "",
  "icons": {
    "48": "icons/main-logo.png"
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/main-logo.png",
    "default_title": "TZM.fi RBE edu",
    "default_popup": "popup/redirect.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9b2fa77a-19c0-409f-9180-154fe1717698}"
    }
  }
}