Examine source code of Web Archive Explorer

{
  "manifest_version": 2,
  "name": "Web Archive Explorer",
  "version": "1.0",
  "description": "Check and create web archives across multiple archiving services",
  "icons": {
    "48": "icons/archive-48.svg",
    "96": "icons/archive-96.svg"
  },
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus",
    "notifications",
    "*://*.archive.org/*",
    "*://*.archive.is/*",
    "*://*.archive.today/*",
    "*://*.archive.ph/*",
    "webRequest",
    "webRequestBlocking"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/archive-48.svg",
      "96": "icons/archive-96.svg"
    },
    "default_title": "Web Archive Explorer",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "icons/*.svg",
    "popup/*"
  ],
  "applications": {
    "gecko": {
      "id": "unnohwn@proton.me",
      "strict_min_version": "58.0"
    }
  }
}