Examine source code of OnlyHTML

{
  "manifest_version": 2,
  "name": "OnlyHTML",
  "version": "1.0",
  "author": "Vishwa R",
  "description": "An open source Add-on to remove the CSS of a webpage.",
  "icons": {
    "48": "Icons/icon48.png"
  },
  "permissions": [
    "<all_urls>",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "vishwa.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "OnlyHTML@code-reaper08"
    }
  },
  "content_scripts": [],
  "browser_action": {
    "default_icon": {
      "48": "Icons/icon48.png"
    }
  }
}