Examine source code of Magnifier

{
  "manifest_version": 2,
  "name": "Magnifier",
  "version": "1.1.0",
  "description": "Hover over any text, image, or PDF to magnify it with a customisable lens. Choose circle or rectangle shape, zoom 1×–10×, three lens sizes, and five cursor positions.",
  "author": "Magnifier Extension",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Magnifier Settings",
    "default_popup": "popup/popup.html",
    "browser_style": false
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>",
        "file:///*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "content_security_policy": "script-src 'self' https://cdnjs.cloudflare.com; object-src 'none'",
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{3065b218-9eb0-41cb-b3ab-8ba9a3e7a723}"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ]
}