Examine source code of Purifier

{
  "name": "Purifier",
  "version": "1.0.0",
  "description": "Sanitizes URLs by removing all tracking-related query params",
  "icons": {
    "48": "dist/icons/main.png"
  },
  "background": {
    "scripts": [
      "dist/index.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "http://*/*",
    "https://*/*"
  ],
  "manifest_version": 2
}