Examine source code of DDownload

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.0.2",
  "short_name": "DDownload",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png",
    "256": "icon/256.png"
  },
  "default_locale": "en",
  "homepage_url": "https://ddownload.com",
  "action": {
    "default_title": "DDownload",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "downloads",
    "contextMenus",
    "activeTab",
    "scripting",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://api-v2.ddownload.com/*",
    "*://ddownload.com/*",
    "*://*.ddownload.com/*",
    "*://ddl.to/*",
    "*://*.ddl.to/*",
    "*://ddl.ch/*",
    "*://*.ddl.ch/*",
    "*://filecrypt.cc/*",
    "*://*.filecrypt.cc/*",
    "*://filecrypt.co/*",
    "*://*.filecrypt.co/*",
    "*://cript.to/*",
    "*://*.cript.to/*",
    "*://tolink.to/*",
    "*://*.tolink.to/*",
    "*://hide.cx/*",
    "*://*.hide.cx/*",
    "https://api.hide.cx/*"
  ],
  "optional_permissions": [
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@ddownload.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://*.cript.to/*",
        "*://*.filecrypt.cc/*",
        "*://*.filecrypt.co/*",
        "*://*.hide.cx/*",
        "*://*.tolink.to/*",
        "*://cript.to/*",
        "*://filecrypt.cc/*",
        "*://filecrypt.co/*",
        "*://hide.cx/*",
        "*://tolink.to/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "*://*.cript.to/*",
        "*://*.filecrypt.cc/*",
        "*://*.filecrypt.co/*",
        "*://*.hide.cx/*",
        "*://*.tolink.to/*",
        "*://cript.to/*",
        "*://filecrypt.cc/*",
        "*://filecrypt.co/*",
        "*://hide.cx/*",
        "*://tolink.to/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/protector.js"
      ]
    }
  ]
}