Examine source code of PathToPobb.in

{
  "manifest_version": 2,
  "name": "PathToPobb.in",
  "version": "2.0",
  "description": "Automatically redirects Path of Exile build links from Maxroll and Mobalytics to pobb.in — code pre-filled, submitted instantly.",
  "browser_specific_settings": {
    "gecko": {
      "id": "pathtopobb@wounded-deer-meliorne",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "*://*.maxroll.gg/*",
    "*://maxroll.gg/*",
    "*://*.mobalytics.gg/*",
    "*://mobalytics.gg/*",
    "*://pobb.in/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.maxroll.gg/poe/*",
        "*://maxroll.gg/poe/*"
      ],
      "js": [
        "content_buildguide.js",
        "content_maxroll.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.mobalytics.gg/poe/*",
        "*://mobalytics.gg/poe/*",
        "*://*.mobalytics.gg/poe",
        "*://mobalytics.gg/poe",
        "*://*.mobalytics.gg/poe/builds",
        "*://mobalytics.gg/poe/builds"
      ],
      "js": [
        "content_mobalytics.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://pobb.in/*"
      ],
      "js": [
        "content_pobb.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "128": "icon128.png"
  }
}