Examine source code of Diff Website Changes

{
  "manifest_version": 3,
  "name": "Diff Website Changes",
  "description": "Enable diff view for Websites. The old, cached version is compared to the new version of a website. Differences are highlighted.",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "diff-website-change-extension@martin-renze.de",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Diff Website Changes",
    "default_icon": {
      "16": "images/icon-16.png",
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "128": "images/icon-128.png"
    }
  }
}