Examine source code of B-Link extension

{
  "applications": {
    "gecko": {
      "id": "info@evaste.com",
      "strict_min_version": "52.0"
    }
  },
  "manifest_version": 2,
  "name": "B-Link extension",
  "version": "1.1resigned1",
  "description": "B-Link extension for Mozilla Firefox - By BRANDYOULIKE",
  "icons": {
    "16": "logo16.png",
    "32": "logo32.png",
    "64": "logo64.png",
    "128": "logo128.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_icon": "images/logo32.png",
    "default_title": "B-Link",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html"
  },
  "web_accessible_resources": [
    "logo.png"
  ]
}