Examine source code of Clean Copy Address-Bar

{
  "description": "Copy a clean version of the current browser address bar URL",
  "manifest_version": 2,
  "name": "Clean Copy Address-Bar",
  "version": "1.0.0",
  "homepage_url": "https://github.com/christiankaindl/clean-copy-address#readme",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "page_action": {
    "default_icon": "icons/copy.svg",
    "default_title": "Copy clean URL",
    "browser_style": true,
    "show_matches": [
      "*://*/*"
    ]
  },
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ]
}