Examine source code of Image Links Extractor

{
  "manifest_version": 2,
  "name": "Image Links Extractor",
  "version": "1.0",
  "description": "Extract all image links (jpg, png, webp) from the current page.",
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "48": "/icons/icon-48.png",
    "64": "/icons/icon-64.png",
    "128": "/icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": "/icons/icon-64.png",
    "default_title": "Extract Image Links",
    "default_popup": "/popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3a51bd5a-a82c-4495-8362-40417c003cc8}"
    }
  }
}