Examine source code of CF easy reader

{
  "manifest_version": 3,
  "name": "CF easy reader",
  "version": "0.1.0",
  "description": "Enhances the reading expericence in Codeforces using custom bionic reading method.",
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "*://codeforces.com/*"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://codeforces.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "styles.css"
      ],
      "matches": [
        "*://codeforces.com/*"
      ]
    }
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "codeforceseasybionicreader@ample.vacac",
      "strict_min_version": "58.0"
    }
  }
}