Examine source code of SSSTik

{
  "manifest_version": 2,
  "name": "SSSTik",
  "version": "1.0",
  "description": "Convert TikTok Videos to MP4 with one click from your Firefox Browser.",
  "homepage_url": "https://ssstik.tv/",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/32.png",
    "default_title": "SSSTik",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{be435cc3-66e6-4ca0-869b-7702ab7610a4}"
    }
  }
}