Examine source code of Reddit Searcher

{
  "manifest_version": 2,
  "name": "Reddit Searcher",
  "version": "1.1",
  "description": "Redirects to Reddit URLs when entering a url in the style \"r/*\"",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png",
    "192": "icons/icon-192.png"
  },
  "background": {
    "scripts": [
      "search.js"
    ]
  },
  "permissions": [
    "webNavigation",
    "tabs"
  ]
}