Examine source code of Meme Magic Maker v3

{
  "background": {
    "scripts": [
      "scripts/service_worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.memesyndicate.to/*",
        "https://memesyndicate.to/*",
        "https://*.zipstreams.net/*",
        "https://*.memesyndicate.com/*"
      ],
      "js": [
        "scripts/content_script.js"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "19": "icon128_on.png",
      "38": "icon128_on.png"
    },
    "default_title": "Meme Magic Maker v3"
  },
  "description": "This extension adds CORS headers to resources, expanding memesyndicate/zip's functionality while also improving overall website speed by removing the need for Flash Player and other bulky frameworks",
  "icons": {
    "128": "icon128_on.png"
  },
  "manifest_version": 3,
  "name": "Meme Magic Maker v3",
  "permissions": [
    "declarativeNetRequest",
    "storage"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "meme_rules",
        "enabled": true,
        "path": "meme_rules.json"
      }
    ]
  },
  "host_permissions": [
    "*://*.memesyndicate.com/",
    "*://*.memesyndicate.to/",
    "*://*.llnwi.net/",
    "*://*.hulustream.com/",
    "*://*.footprint.net/",
    "*://*.espn.com/",
    "*://*.uplynk.com/",
    "*://*.akamaized.net/",
    "*://*.mlb.com/",
    "*://*.warnermediacdn.com/",
    "*://*.endeavorstreaming.net/",
    "*://*.movetv.com/",
    "*://*.neulion.com/",
    "*://*.azure.net/",
    "*://*.herokuapp.com/",
    "*://*.mux.com/",
    "*://*.zipstreams.net/"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icon128_on.png",
        "scripts/indicator.js"
      ],
      "matches": [
        "https://*/*"
      ]
    }
  ],
  "version": "0.1.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fd1657a4-c79e-4ac7-8ead-5f41cf16df06}"
    },
    "gecko_android": {
      "id": "{fd1657a4-c79e-4ac7-8ead-5f41cf16df06}"
    }
  }
}