manifest.json

  {
    "name": "Text Analytics",
    "version": "1.0",
    "description": "Scraper helper",
    "permissions": ["activeTab", "declarativeContent", "storage"],
    "background": {
        "scripts": ["background.js"],
        "persistent": false
    },
    "page_action": {
      "default_popup": "popup.html",
      "default_icon": {
        "16": "images/icon16.png",
        "48": "images/icon48.png",
        "128": "images/icon128.png"
      }
    },
    "icons": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    },
    "content_scripts": [
        {
            "matches": ["http://*/*", "https://*/*"],
            "run_at": "document_idle",
            "js": ["./js/jquery-3.5.1.js", "contentscript.js"]
        }
    ],
    "web_accessible_resources": ["injected.js"],
    "manifest_version": 2
  }