Examine source code of Copy Code

{
  "manifest_version": 2,
  "name": "Copy-Code",
  "version": "1.3",
  "description": "Creates a copy to clipboard button on every code text.",
  "icons": {
    "48": "icons/copy-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://stackoverflow.com/*",
        "https://stackoverflowteams.com/*",
        "https://*.stackexchange.com/*",
        "https://serverfault.com/*",
        "https://superuser.com/*",
        "https://askubuntu.com/*",
        "https://moodle.up.pt/*",
        "https://www.w3resource.com/*",
        "https://w3resource.com/*",
        "https://villate.org/*",
        "https://*.medium.com/*",
        "https://www.npmjs.com/*",
        "https://forums.raspberrypi.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec838ca6-d49c-42bb-aa88-e4cb7ced9e03}"
    }
  }
}