Photo download & Save image

manifest.json

{
  "action": {
    "default_icon": "img/icon-34.png",
    "default_popup": "popup.html"
  },
  "background": {
    "service_worker": "background.bundle.js"
  },
  "commands": {
    "CMD_DOWNLOAD_ALL_TABS": {
      "description": "__MSG_key_dl_all_tabs__",
      "suggested_key": "Alt+A"
    },
    "CMD_DOWNLOAD_CURRENT_TAB": {
      "description": "__MSG_key_dl_current_tab__",
      "suggested_key": "Alt+Z"
    },
    "CMD_OUTPUT_DOWNLOAD": {
      "description": "__MSG_key_dl__",
      "suggested_key": "Alt+S"
    },
    "CMD_OUTPUT_SELECT_ALL": {
      "description": "__MSG_key_select_all__"
    },
    "CMD_OUTPUT_SELECT_TOGGLE": {
      "description": "__MSG_key_select_toggle__"
    }
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "contentScript.bundle.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "<all_urls>"
      ]
    },
    {
      "css": [
        "droppanel.css"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    }
  ],
  "default_locale": "en",
  "description": "__MSG_ext_description__",
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "128": "img/icon-128.png"
  },
  "manifest_version": 3,
  "name": "__MSG_ext_name__",
  "options_page": "options.html",
  "permissions": [
    "webRequest",
    "downloads",
    "tabs",
    "cookies",
    "storage"
  ],
  "version": "1.0.3",
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "content.styles.css",
        "img/icon-128.png",
        "img/icon-34.png"
      ]
    }
  ],
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}