Examine source code of PSN Profiles Extra

{
  "manifest_version": 3,
  "name": "PSNP Extra",
  "version": "1.0.0",
  "description": "Add additional features to PSNProfiles.com",
  "author": "Eppin",
  "icons": {
    "16": "trophy-16.png",
    "24": "trophy-24.png",
    "32": "trophy-32.png",
    "64": "trophy-64.png",
    "128": "trophy-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.psnprofiles.com/*"
      ],
      "js": [
        "bundle.js"
      ],
      "css": [
        "main.css",
        "overwrite.css"
      ]
    }
  ],
  "action": {},
  "permissions": [],
  "host_permissions": [
    "*://*.psnprofiles.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "psnpe@trophycollectors.net"
    }
  }
}