Examine source code of Images Downloader

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.2.0",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "mex-parser@extension.local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent",
          "browsingActivity"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "browser_action": {
    "default_title": "__MSG_browserActionTitle__",
    "default_icon": {
      "48": "icons/icon-48.svg"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "downloads",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "panel/panel.html",
    "panel/panel.css",
    "panel/panel-boot.js",
    "panel/panel.js",
    "panel/components/*.js",
    "shared/presets.js",
    "shared/result-dedupe.js",
    "shared/result-filters.js",
    "shared/regex-core.js",
    "shared/host-pattern-esm.js",
    "shared/image-filter.js",
    "shared/url-dedupe.js",
    "shared/i18n/index.js",
    "shared/i18n/en.json",
    "shared/i18n/ru.json"
  ],
  "background": {
    "scripts": [
      "shared/constants.js",
      "shared/host-pattern.js",
      "shared/i18n/core.js",
      "shared/url.js",
      "shared/regex.js",
      "shared/image-filter-iife.js",
      "shared/dom-extract.js",
      "shared/image-pipeline.js",
      "shared/path-utils.js",
      "shared/image-blacklist.js",
      "background/image-download.js",
      "background/orchestrator.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared/constants.js",
        "shared/host-pattern.js",
        "shared/url.js",
        "shared/regex.js",
        "shared/image-filter-iife.js",
        "shared/dom-extract.js",
        "content/extractor.js",
        "content/panel-host.js"
      ],
      "run_at": "document_idle"
    }
  ]
}