Examine source code of How2Say

{
  "manifest_version": 2,
  "name": "How2Say",
  "version": "3.11.0",
  "description": "Pronunciation for American English words with phonetic IPA and audio",
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{73c59290-7ab7-41a3-aa76-2c9fca8009da}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "src/content/bundle/message.js"
      ]
    },
    {
      "matches": [
        "https://dictionary.cambridge.org/us/dictionary/english/*"
      ],
      "js": [
        "src/content/bundle/cambridge.js"
      ]
    },
    {
      "matches": [
        "https://www.oxfordlearnersdictionaries.com/*"
      ],
      "js": [
        "src/content/bundle/oxford.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/background/script.js"
    ],
    "type": "module",
    "persistent": false
  },
  "options_ui": {
    "page": "src/options/entry-point.html"
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/icon-19.png",
      "38": "icons/icon-38.png"
    },
    "default_title": "How2Say"
  },
  "commands": {
    "pronounce": {
      "suggested_key": {
        "default": "Ctrl+Alt+D",
        "mac": "Command+Alt+D"
      },
      "description": "Pronounce selection"
    }
  },
  "web_accessible_resources": [
    "resources/Andika-Regular.ttf",
    "resources/NotoSans-Regular.ttf"
  ],
  "permissions": [
    "downloads",
    "menus",
    "storage",
    "tabs",
    "unlimitedStorage",
    "https://api.elevenlabs.io/v1/text-to-speech/*",
    "https://api.openai.com/v1/audio/speech/",
    "https://api.play.ht/api/v2/tts/stream",
    "https://api.sws.speechify.com/v1/audio/*",
    "https://api.v7.unrealspeech.com/*",
    "https://api2.unalengua.com/ipav3/",
    "https://assets.linguee.com/static/*",
    "https://dictionary.cambridge.org/*",
    "https://polly.af-south-1.api.aws/v1/speech",
    "https://polly.ap-east-1.api.aws/v1/speech",
    "https://polly.ap-northeast-1.api.aws/v1/speech",
    "https://polly.ap-northeast-2.api.aws/v1/speech",
    "https://polly.ap-northeast-3.api.aws/v1/speech",
    "https://polly.ap-south-1.api.aws/v1/speech",
    "https://polly.ap-southeast-1.api.aws/v1/speech",
    "https://polly.ap-southeast-2.api.aws/v1/speech",
    "https://polly.ca-central-1.api.aws/v1/speech",
    "https://polly.eu-central-1.api.aws/v1/speech",
    "https://polly.eu-north-1.api.aws/v1/speech",
    "https://polly.eu-south-2.api.aws/v1/speech",
    "https://polly.eu-west-1.api.aws/v1/speech",
    "https://polly.eu-west-3.api.aws/v1/speech",
    "https://polly.me-south-1.api.aws/v1/speech",
    "https://polly.sa-east-1.api.aws/v1/speech",
    "https://polly.us-east-1.api.aws/v1/speech",
    "https://polly.us-east-2.api.aws/v1/speech",
    "https://polly.us-west-1.api.aws/v1/speech",
    "https://polly.us-west-2.api.aws/v1/speech",
    "https://s3-us-west-2.amazonaws.com/words.alexmeub.com/*",
    "https://ssl.gstatic.com/dictionary/static/sounds/*",
    "https://texttospeech.responsivevoice.org/v1/*",
    "https://translatormind.com/translator-tool/ipa-phonetic-transcription-translator/",
    "https://translatormind.com/wp-admin/admin-ajax.php",
    "https://www.google.com/speech-api/v1/*",
    "https://www.linguee.com/*",
    "https://www.oxfordlearnersdictionaries.com/*"
  ]
}