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manifest.json
{
  "name": "GeoGuessr account switcher",
  "description": "Don't want to buy a subscription to GeoGuessr but want to play? This extension is designed to solve this problem!",
  "version": "0.1.0",
  "manifest_version": 2,
  "icons": {
    "192": "/images/icon-192.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "foreground.js"
      ],
      "matches": [
        "https://www.geoguessr.com/*"
      ]
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "192": "/images/icon-192.png"
    }
  },
  "permissions": [
    "storage",
    "scripting",
    "cookies"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{36559d0f-acfc-4a2c-ab08-9351ade9bfb0}"
    }
  }
}