Examine source code of Fix Pikabu Problems

{
  "manifest_version": 2,
  "name": "Fix Pikabu Problems",
  "version": "1.0",
  "description": "Расширение, которое исправит проблемы Пикабу",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "48.0",
      "id": "{9e9ef1bb-b11a-4091-b159-5ae917c89992}"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "*://*.pikabu.ru/*"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_popup": "settings_tab/settings.html"
  },
  "content_scripts": [
    {
      "js": [
        "js/fixer.js"
      ],
      "matches": [
        "*://*.pikabu.ru/*"
      ]
    }
  ]
}