Examine source code of websy

{
  "name": "websy.pro",
  "description": "Attach websy.pro to every page to spread the love universally. Mark the web as read and vote on the usefulness of content. And yes, forget bookmarks.",
  "version": "0.9",
  "author": "websy.pro by Vast Impact FZE",
  "homepage_url": "https://websy.pro/",
  "icons": {
    "16": "icons/logo16.png",
    "32": "icons/logo32.png",
    "48": "icons/logo48.png",
    "64": "icons/logo64.png",
    "96": "icons/logo96.png",
    "128": "icons/logo128.png",
    "256": "icons/logo256.png"
  },
  "permissions": [
    "tabs",
    "https://websy.pro/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "64": "icons/icon64.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png",
      "256": "icons/icon256.png"
    },
    "default_title": "websy.pro"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "vote.css"
      ],
      "js": [
        "vote.js",
        "initialize.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "img/icon/off-done.svg",
    "img/icon/off-love.svg",
    "img/icon/off-helpful.svg",
    "img/icon/off-funny.svg",
    "img/icon/off-keep.svg",
    "img/icon/off-important.svg",
    "img/icon/off-dislike.svg",
    "img/icon/off-false.svg",
    "img/icon/on-done.svg",
    "img/icon/on-love.svg",
    "img/icon/on-helpful.svg",
    "img/icon/on-funny.svg",
    "img/icon/on-keep.svg",
    "img/icon/on-important.svg",
    "img/icon/on-dislike.svg",
    "img/icon/on-false.svg",
    "img/icon/vote-shift.svg",
    "img/logo-title.svg",
    "img/vote-icons.svg"
  ],
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "websy-vote-ff@websy.pro"
    }
  }
}