Examine source code of Seekr

{
  "manifest_version": 2,
  "name": "Seekr",
  "version": "1.0.11",
  "description": "Faster browsing experience.",
  "author": "MedTech",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "*://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "bg.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a551ff6a-67f2-4df5-9df8-2e6a0d9766bf}"
    }
  }
}