Examine source code of Leadsolo Browser Plugin

{
  "browser_action": {
    "default_popup": "leadsolo2.html",
    "default_title": "Leadsolo Browser Plugin",
    "default_icon": "leadsolo-browser-logo.png"
  },
  "description": "Leadsolo",
  "manifest_version": 2,
  "name": "Leadsolo Browser Plugin",
  "permissions": [
    "activeTab",
    "https://leadsolo.io/*",
    "<all_urls>"
  ],
  "version": "2.2",
  "icons": {
    "16": "leadsolo-browser-logo.png",
    "48": "leadsolo-browser-logo.png",
    "128": "leadsolo-browser-logo.png"
  }
}