Examine source code of blockerDNS Ad & Tracker Blocking

{
  "name": "blockerDNS Ad & Tracker Blocking",
  "short_name": "blockerDNS",
  "version": "1.2",
  "description": "Block ads and online trackers with blockerDNS's free Firefox extension",
  "author": "Tambe Barsbay",
  "homepage_url": "https://blockerdns.com",
  "permissions": [
    "http://*/*",
    "https://*/*",
    "webRequest",
    "webRequestBlocking",
    "storage"
  ],
  "icons": {
    "16": "img/icon_16.png",
    "32": "img/icon_32.png",
    "48": "img/icon_48.png",
    "128": "img/icon_128.png",
    "192": "img/icon_192.png",
    "512": "img/icon_512.png"
  },
  "background": {
    "scripts": [
      "js/data.js",
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "img/icon_16.png",
    "default_popup": "popup.html"
  },
  "manifest_version": 2
}