Examine source code of Mastodon Link

{
  "name": "Mastodon Link",
  "version": "1.2.1",
  "author": "Alexander Haslam <@indiealexh@tny.social>",
  "manifest_version": 3,
  "description": "Extension to make it easy to visit mastodon profiles from your instance",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mastodon-link@masrly.com"
    }
  }
}