Examine source code of Linkwarden Companion

{
  "manifest_version": 2,
  "name": "Linkwarden Companion",
  "version": "0.2.0",
  "description": "Browse and save bookmarks to your self-hosted Linkwarden instance. Browse collections, search links, and save pages with one click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "linkwarden-companion-moz@diggix.com",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    },
    "default_popup": "popup.html",
    "default_title": "Linkwarden Companion"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content-toast.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "add.html",
    "add.css",
    "add.js"
  ]
}