Examine source code of Nstools

{
  "manifest_version": 2,
  "name": "Nstools",
  "version": "1.5resigned1",
  "default_locale": "fr",
  "description": "__MSG_extDescription__",
  "homepage_url": "https://nstools.fr",
  "icons": {
    "128": "img/icon_128.png"
  },
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_action": {
    "default_icon": "img/icon.png",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a11500a7-6dcd-4868-aa18-36f26ffae2d1}"
    }
  }
}