Examine source code of Fingerprint Defender

{
  "manifest_version": 2,
  "name": "Fingerprint Defender",
  "version": "2.1.0",
  "description": "Protect against browser fingerprinting with noise randomization - blend in, don't stand out",
  "author": "Digital Fracture",
  "browser_specific_settings": {
    "gecko": {
      "id": "fingerprint-defender@digitalfracture.co.uk",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "inject.js"
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon-48.svg",
      "96": "icons/icon-96.svg"
    },
    "default_title": "Fingerprint Defender"
  },
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  }
}