Examine source code of Readeck

{
  "manifest_version": 3,
  "name": "readeck",
  "version": "2.6.3",
  "description": "Readeck browser extension",
  "author": "Olivier Meunier <olivier@readeck.com>",
  "permissions": [
    "activeTab",
    "contextMenus",
    "scripting",
    "storage",
    "webRequest"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'"
  },
  "action": {
    "default_title": "Readeck",
    "default_icon": {
      "48": "icon48.png"
    },
    "default_area": "navbar",
    "default_popup": "action/index.html"
  },
  "commands": {
    "_execute_action": {
      "description": "Toggle Readeck",
      "suggested_key": {
        "default": "Alt+Shift+R"
      }
    },
    "save": {
      "description": "Save the current page to Readeck",
      "suggested_key": {
        "default": "Alt+Shift+W"
      }
    }
  },
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    {
      "resources": [
        "oauth-callback.html"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "readeck@readeck.com",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "115.0"
    }
  }
}