Examine source code of Open Ledger Reader

{
  "manifest_version": 3,
  "name": "Open Ledger Reader",
  "version": "1.0.0",
  "description": "An unofficial, read-only and distraction-free article view for Reddit.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{048dfd0d-1aea-4094-9025-e8a7fb36b812}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://reddit.com/*",
    "https://www.reddit.com/*",
    "https://new.reddit.com/*"
  ],
  "action": {
    "default_title": "Turn article view on",
    "default_icon": {
      "16": "icons/toggle-off.svg",
      "32": "icons/toggle-off.svg"
    }
  },
  "icons": {
    "48": "icons/article.svg",
    "96": "icons/article.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://reddit.com/*",
        "https://www.reddit.com/*",
        "https://new.reddit.com/*"
      ],
      "exclude_matches": [
        "https://old.reddit.com/*"
      ],
      "css": [
        "article.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}