Examine source code of URL Encoder Decoder

{
  "description": "URL Encoder Decoder",
  "manifest_version": 2,
  "name": "URL Encoder Decoder",
  "version": "1.0.1resigned1",
  "homepage_url": "https://github.com/gurumukhi",
  "icons": {
    "48": "icons/logo-icon-500px.png",
    "64": "icons/logo-icon-500px.png"
  },
  "browser_action": {
    "default_icon": "icons/logo-icon-500px.png",
    "default_title": "URL Encoder Decoder",
    "default_popup": "popup/index.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c2111c0a-1afb-4868-84ab-0d3d64eef92d}"
    }
  }
}