Examine source code of Tab Extract

{
  "name": "Tab Extract",
  "version": "1.6.3",
  "description": "A simple & lightweight tool to reduce tab clutter, using just the address bar.",
  "manifest_version": 3,
  "omnibox": {
    "keyword": "ex"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "icons": {
    "16": "icon_016.png",
    "32": "icon_032.png",
    "48": "icon_048.png",
    "128": "icon_128.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "options_ui": {
    "page": "src/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5f19c5b2-8ef9-4f63-9d0b-d13bc476972a}",
      "strict_min_version": "109.0"
    }
  }
}