Examine source code of Shift Translate

{
  "author": "Shift Translate local build",
  "background": {
    "scripts": [
      "i18n.js",
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "i18n.js",
        "zen_content.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    }
  ],
  "description": "Чёрно-белый перевод текста и выделенных фрагментов для Zen Browser.",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "96": "icons/96.png",
    "128": "icons/128.png",
    "256": "icons/256.png"
  },
  "manifest_version": 2,
  "name": "Shift Translate",
  "options_page": "options.html",
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>",
    "https://translate.googleapis.com/*",
    "https://translate-pa.googleapis.com/*",
    "https://translate.google.com/*"
  ],
  "version": "2.0.48",
  "web_accessible_resources": [
    "icons/16.png",
    "icons/19.png",
    "icons/32.png",
    "icons/38.png",
    "icons/48.png",
    "icons/128.png",
    "icons/icon.svg",
    "icons/audio.svg",
    "icons/64.png",
    "icons/96.png",
    "icons/256.png",
    "icons/selection_32.png",
    "icons/selection_48.png",
    "icons/selection_64.png",
    "icons/selection_128.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "shift-translate-607a8a90-b105-4892-952e-4862f71cc242@addons.mozilla.org",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/16.png",
      "19": "icons/19.png",
      "32": "icons/32.png",
      "38": "icons/38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Shift Translate"
  }
}