Examine source code of Feedly

{
  "manifest_version": 2,
  "name": "Feedly",
  "version": "0.0.1",
  "description": "Share news from Feedly to Discord",
  "icons": {
    "512": "icons/logo.png"
  },
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ],
  "background": {
    "scripts": []
  },
  "content_scripts": [
    {
      "matches": [
        "https://feedly.com/*"
      ],
      "js": [
        "app.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/logo.png",
    "default_title": "Feedly",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{52e4b719-2e05-40cf-9818-f076aa21a2b2}"
    }
  }
}