Examine source code of Anything Reader

{
  "manifest_version": 2,
  "name": "Anything Reader",
  "description": "Offline and fully private Text to Speech, read aloud any web page.",
  "version": "1.0.2",
  "icons": {
    "16": "icon16_on.png",
    "32": "icon32_on.png",
    "48": "icon48_on.png",
    "128": "icon128_on.png"
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "nativeMessaging",
    "storage",
    "tabs",
    "unlimitedStorage"
  ],
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content.css"
      ],
      "js": [
        "html-analyzer-common.js",
        "text-preprocessor.js",
        "ttsManager.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "icon*.png",
    "speaker.svg",
    "audio/*",
    "kittenTTS/*",
    "supertonic/ort/*",
    "reader.html",
    "reader.js",
    "reader-init.js"
  ],
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtEuVjn5roFsujzFfifQV0WLdvrDc5AVWHZlKwRHaZuj0yk61ZVY5aOjT0qo+BzpBiWvhHGpa1qshsq6G5plt3vjbBfajcDSxIhlFTwyJcleq1BDHWW24nAb7HOnUFicXuhfx9KaoXnN7o36dM16bpv1PUO3hsM2rCsWJKsbgpBIg1nWUtHBkdLGOWcWudmBu7O7VSY3ADS2QQaXM2p0MM0q+ggxan5zvZ8r3kHmDzhGMwGdRoMFlVBazKMv6kyCN0GQg0TPG8X1Nx8lcFTWvnvoVcMRKoRJUamiK7/RBglxw1qjsBZbzmH+ZYEdUwGDfAda1pyO647gu9Gz6M/gCzwIDAQAB",
  "browser_specific_settings": {
    "gecko": {
      "id": "anything-reader@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icon16_on.png",
      "32": "icon32_on.png",
      "48": "icon48_on.png",
      "128": "icon128_on.png"
    },
    "default_title": "Anything Reader",
    "default_popup": "popup.html"
  },
  "background": {
    "page": "tts-host.html",
    "persistent": true
  }
}