Examine source code of Snap Pixel Teller

{
  "manifest_version": 3,
  "name": "Snap Pixel Teller",
  "description": "Snap Pixel Teller",
  "version": "1.0.5",
  "icons": {
    "16": "asset/icon_16.png",
    "32": "asset/icon_32.png",
    "128": "asset/icon_128.png"
  },
  "action": {
    "default_title": "Snap Pixel Helper",
    "default_icon": {
      "16": "asset/icon_16.png",
      "32": "asset/icon_32.png",
      "128": "asset/icon_128.png"
    },
    "default_popup": "src/popup.html"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "src/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "webRequest"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "src/embedded.js",
        "src/popup.html"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c682a836-ecf1-4645-8fea-a233435d08cc}"
    }
  }
}