Examine source code of Searchbyimage

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "__MSG_chrome_extension_name__",
  "short_name": "__MSG_chrome_extension_short_name__",
  "description": "__MSG_chrome_extension_description__",
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "1.2",
  "permissions": [
    "storage",
    "contextMenus",
    "tabs",
    "activeTab"
  ],
  "host_permissions": [
    "https://*.searchbyimage.com/*",
    "https://*.searchbyimage.ru/*"
  ],
  "action": {
    "default_icon": "19x19.png"
  },
  "background": {
    "type": "module",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "searchbyimagecom@searchbyimagecom",
      "strict_min_version": "110.0"
    }
  },
  "icons": {
    "16": "16x16.png",
    "48": "48x48.png",
    "128": "128x128.png"
  }
}