manifest.json

{
    "name": "Aeries++",
    "description": "Modify Aeries grades with mock assignments.",
    "version": "1.0",
    "manifest_version": 3,
    "background": {
        "service_worker": "background.js"
    },
    "permissions":  ["storage", "activeTab", "scripting"],
    "action": {
        "default_popup": "popup.html",
        "default_icon": 
        {
            "16": "/images/Aeries16.png",
            "32": "/images/Aeries32.png",
            "48": "/images/Aeries48.png",
            "128": "/images/Aeries500.png"
        } 
    },
    "content_scripts": [
        {
          "matches": ["https://aeries.carmelunified.org/parent/GradebookDetails.aspx"],
          "js": ["content-script.js"]
        }
      ],
    "icons": {
        "16": "/images/Aeries16.png",
        "32": "/images/Aeries32.png",
        "48": "/images/Aeries48.png",
        "128": "/images/Aeries500.png"
    }
}