Examine source code of Arweave.app

{
  "name": "Arweave.app",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "manifest_version": 2,
  "version": "0.2022.725.1327",
  "description": "Arweave.app browser extension",
  "icons": {
    "128": "arweaveViewSmall.png"
  },
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "wrapper.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{167f5c4a-4e51-4e7c-bb71-24f087e4cd83}"
    }
  },
  "browser_action": {
    "default_popup": "popup.html"
  }
}