Examine source code of Rander

{
  "description": "Randomize traffic, block unwanted content and protect against malicious JS scripts. Still under development!",
  "manifest_version": 2,
  "name": "Rander",
  "version": "0.0.5resigned1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "rander@rander.com",
      "strict_min_version": "61.0"
    }
  },
  "icons": {
    "517": "icons/icon.png"
  },
  "permissions": [
    "webRequest",
    "<all_urls>",
    "webRequestBlocking",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_title": "Rander",
    "default_popup": "popup/default.html"
  }
}