Examine source code of Printify for Le Monde

{
  "manifest_version": 2,
  "name": "Printify for Le Monde",
  "author": "Peter Wennersten",
  "version": "1.6.3",
  "description": "Printifier for Lemonde.fr",
  "options_ui": {
    "page": "options/options.html"
  },
  "icons": {
    "16": "/icons/m-logo-bleu.svg",
    "19": "/icons/m-logo-bleu.svg",
    "32": "/icons/m-logo-bleu.svg",
    "48": "/icons/m-logo-bleu.svg",
    "96": "/icons/m-logo-bleu.svg"
  },
  "permissions": [
    "activeTab"
  ],
  "page_action": {
    "show_matches": [
      "https://*.lemonde.fr/*"
    ],
    "default_icon": "/icons/m-logo-dark.svg",
    "default_title": "Printify for Le Monde",
    "default_popup": "popup/popup.html"
  },
  "applications": {
    "gecko": {
      "id": "dev@kreativkod.com"
    }
  }
}