Examine source code of Mini Pixiv

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "__MSG_appName__",
  "version": "2.2",
  "description": "__MSG_appDesc__",
  "icons": {
    "48": "icons/minip-48.png",
    "96": "icons/minip-96.png",
    "128": "icons/minip-128.png"
  },
  "applications": {
    "gecko": {
      "id": "minipixiv.ext@gmail.com",
      "strict_min_version": "57.0a1"
    }
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "https://www.pixiv.net/*",
    "https://s.pximg.net/*"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}