Examine source code of Paliha

{
  "manifest_version": 2,
  "name": "Paliha",
  "version": "2.2",
  "description": "Get the Sinhala translations of any english word when the word is highlighted",
  "icons": {
    "48": "icons/48.png"
  },
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery-3.3.1.js",
        "content-script.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "images/ajax_loading.gif",
    "images/logo.png"
  ],
  "permissions": [
    "*://paliha.riscor.net/*",
    "webRequest",
    "notifications",
    "tabs"
  ]
}