Examine source code of PinGrab - Pinterest Downloader

{
  "manifest_version": 2,
  "name": "Getpin - Pinterest Downloader",
  "description": "Download Pinterest images, videos, and GIFs with one click into organized folders.",
  "version": "1.0.5",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "downloads",
    "storage",
    "activeTab",
    "https://*.pinterest.com/*",
    "https://i.pinimg.com/*",
    "https://v1.pinimg.com/*",
    "https://*.pinimg.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pingrab@pingrab.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Getpin",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.pinterest.com/pin/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}