Examine source code of Browser Zoom

{
  "manifest_version": 3,
  "name": "Browser Zoom",
  "description": "Only let zoom run in the browser. No more popups!",
  "version": "1.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "webNavigation"
  ],
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{daef88de-f4dd-4359-997c-b0c1eee0e5bb}"
    }
  }
}