Examine source code of Pin-Down for Pinterest

{
  "manifest_version": 3,
  "name": "Pin-Dwon for Pinterest",
  "version": "1.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "{15a0672b-04ed-47ee-a1e3-7afa0f977723}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "sidebar_action": {
    "default_panel": "popup.html",
    "default_icon": "icons/64.png",
    "open_at_install": false
  },
  "description": "Batch download images and one-click to download videos in Pinterest page.",
  "icons": {
    "64": "icons/64.png"
  },
  "action": {
    "default_icon": {
      "64": "icons/64.png"
    },
    "default_title": "Pin-Dwon for Pinterest"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "storage",
    "downloads",
    "tabs",
    "declarativeNetRequest"
  ],
  "content_scripts": [
    {
      "all_frames": false,
      "css": [
        "css/pinterest.css"
      ],
      "js": [
        "js/jquery-1.10.2.min.js",
        "js/common.js",
        "js/pinterest.js"
      ],
      "matches": [
        "https://*.pinterest.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "pinterest_rules",
        "enabled": true,
        "path": "x-frame-rule.json"
      }
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "js/common.js",
        "icons/*"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ]
}