Examine source code of Rinkoe Magic

{
  "manifest_version": 3,
  "name": "Rinkoe Magic",
  "version": "1.2",
  "description": "Makes it easier for you to add links to your Rinkoe.com collections.",
  "permissions": [
    "contextMenus",
    "activeTab",
    "tabs"
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://x.com/*",
        "https://twitter.com/*",
        "https://www.x.com/*",
        "https://www.twitter.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    },
    "default_title": "Open Popup",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "RinkoeMagic@Rinkoe.com",
      "strict_min_version": "58.0"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "popup.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}