Examine source code of Pluck

{
  "manifest_version": 3,
  "name": "Pluck",
  "description": "Copy the Pinterest image under your pointer without opening the Pin.",
  "version": "0.8.2",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Pluck",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "shared.js",
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "clipboardWrite",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "https://*.pinterest.com/*",
    "https://*.pinterest.ca/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.pinterest.com/*",
        "https://*.pinterest.ca/*"
      ],
      "js": [
        "page-clipboard.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://*.pinterest.com/*",
        "https://*.pinterest.ca/*"
      ],
      "js": [
        "shared.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "page-clipboard.js"
      ],
      "matches": [
        "https://*.pinterest.com/*",
        "https://*.pinterest.ca/*"
      ]
    }
  ],
  "optional_host_permissions": [
    "https://i.pinimg.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pluck@extension",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}