Examine source code of BCA GPA

{
  "manifest_version": 2,
  "name": "BCA GPA",
  "version": "1.1",
  "description": "Calculates and shows GPA for PowerSchool BCA",
  "icons": {
    "64": "64.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://bcts.powerschool.com/guardian/home.html*",
        "https://bcts.powerschool.com/guardian/home.html/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{52cf4e1e-96c0-4a81-8b9d-d255efd62262}"
    }
  }
}