Examine source code of CR-Unblocker

{
  "manifest_version": 2,
  "name": "CR-Unblocker",
  "version": "4.0.6",
  "description": "A tool that will proxy the Crunchyroll traffic through a US server.",
  "homepage_url": "https://cr-unblocker.meganeko.dev/",
  "author": "めがねこ",
  "icons": {
    "24": "icons/Crunchyroll-24.png",
    "48": "icons/Crunchyroll-48.png",
    "128": "icons/Crunchyroll-128.png"
  },
  "permissions": [
    "activeTab",
    "cookies",
    "notifications",
    "storage",
    "*://*.crunchyroll.com/*",
    "webRequest",
    "webRequestBlocking",
    "proxy",
    "tabs"
  ],
  "browser_action": {
    "default_icon": {
      "20": "icons/Crunchyroll-20.png",
      "40": "icons/Crunchyroll-40.png",
      "128": "icons/Crunchyroll-128.png"
    },
    "default_title": "CR-Unblocker",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "settings.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "dashboard.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{75b3b5e0-9b85-47e8-b83b-a57158a5d295}"
    }
  }
}