Examine source code of PhraseMaster

{
  "manifest_version": 2,
  "name": "PhraseMaster",
  "version": "1.0",
  "description": "A browser extension to boost your vocabulary by translating common English collocations into Vietnamese, ideal for language learners.",
  "icons": {
    "48": "phrasemaster_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "PhraseMaster"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b838cfa3-d42e-4726-9267-18f1dcdebe20}"
    }
  }
}