Examine source code of SEO Audit Tool

{
  "background": {
    "scripts": [
      "iwebchk.js"
    ]
  },
  "browser_action": {
    "default_icon": "iwebchk_16x16.png",
    "default_title": "iwebchk"
  },
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "description": "Website SEO audit & analysis tool that provides website review in SEO, performance, validity, security, accessibility and many other criteria.",
  "homepage_url": "https://iwebchk.com",
  "icons": {
    "16": "iwebchk_16x16.png",
    "32": "iwebchk_32x32.png",
    "64": "iwebchk_64x64.png",
    "128": "iwebchk_128x128.png"
  },
  "manifest_version": 2,
  "name": "Website Analysis & SEO Tool",
  "version": "1.5resigned1",
  "browser_specific_settings": {
    "gecko": {
      "id": "jid0-OTZaDvmFiYxvBb32A88ofzX7lo0@jetpack"
    }
  }
}