Examine source code of Link In Highlighter

{
  "manifest_version": 3,
  "name": "Link Highlighter",
  "version": "2.0.0",
  "description": "Highlight link tags on web pages to make links more visible and improve browsing experience",
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_title": "Link Highlighter",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "author": "Ricky Yang",
  "homepage_url": "https://github.com/yyyddc/link-highlighter",
  "browser_specific_settings": {
    "gecko": {
      "id": "{EC9EC08C-92C0-481B-8DDD-961ABFDEBA66}",
      "strict_min_version": "128.0"
    }
  }
}